NOISSUE Use patch problems and problem levels instead of exceptions for minecraft profiles.

10 files changed, 171 insertions, 146 deletions

diff --git a/application/MainWindow.cpp b/application/MainWindow.cpp
index 4fc4d173..1633cc39 100644
--- a/application/MainWindow.cpp
+++ b/application/MainWindow.cpp
@@ -1529,6 +1529,10 @@ void MainWindow::on_actionLaunchInstanceOffline_triggered()
 
 void MainWindow::launch(InstancePtr instance, bool online, BaseProfilerFactory *profiler)
 {
+	if(!instance->canLaunch())
+	{
+		return;
+	}
 	m_launchController.reset(new LaunchController());
 	m_launchController->setInstance(instance);
 	m_launchController->setOnline(online);
@@ -1565,7 +1569,9 @@ void MainWindow::instanceChanged(const QModelIndex &current, const QModelIndex &
 	m_selectedInstance = MMC->instances()->getInstanceById(id);
 	if (m_selectedInstance)
 	{
-		ui->instanceToolBar->setEnabled(m_selectedInstance->canLaunch());
+		ui->instanceToolBar->setEnabled(true);
+		ui->actionLaunchInstance->setEnabled(m_selectedInstance->canLaunch());
+		ui->actionLaunchInstanceOffline->setEnabled(m_selectedInstance->canLaunch());
 		renameButton->setText(m_selectedInstance->name());
 		m_statusLeft->setText(m_selectedInstance->getStatusbarDescription());
 		updateInstanceToolIcon(m_selectedInstance->iconKey());
@@ -1576,6 +1582,7 @@ void MainWindow::instanceChanged(const QModelIndex &current, const QModelIndex &
 	}
 	else
 	{
+		ui->instanceToolBar->setEnabled(false);
 		MMC->settings()->set("SelectedInstance", QString());
 		selectionBad();
 		return;
diff --git a/logic/minecraft/MinecraftProfile.cpp b/logic/minecraft/MinecraftProfile.cpp
index 80021672..5fd700f2 100644
--- a/logic/minecraft/MinecraftProfile.cpp
+++ b/logic/minecraft/MinecraftProfile.cpp
@@ -54,36 +54,38 @@ void MinecraftProfile::reload()
 {
 	beginResetModel();
 	m_strategy->load();
-	reapplySafe();
+	reapplyPatches();
 	endResetModel();
 }
 
 void MinecraftProfile::clear()
 {
-	id.clear();
-	type.clear();
-	assets.clear();
-	minecraftArguments.clear();
-	mainClass.clear();
-	appletClass.clear();
-	libraries.clear();
-	tweakers.clear();
-	jarMods.clear();
-	traits.clear();
+	m_minecraftVersion.clear();
+	m_minecraftVersionType.clear();
+	m_minecraftAssets.clear();
+	m_minecraftArguments.clear();
+	m_tweakers.clear();
+	m_mainClass.clear();
+	m_appletClass.clear();
+	m_libraries.clear();
+	m_nativeLibraries.clear();
+	m_traits.clear();
+	m_jarMods.clear();
+	m_problemSeverity = ProblemSeverity::PROBLEM_NONE;
 }
 
 void MinecraftProfile::clearPatches()
 {
 	beginResetModel();
-	VersionPatches.clear();
+	m_patches.clear();
 	endResetModel();
 }
 
 void MinecraftProfile::appendPatch(ProfilePatchPtr patch)
 {
-	int index = VersionPatches.size();
+	int index = m_patches.size();
 	beginInsertRows(QModelIndex(), index, index);
-	VersionPatches.append(patch);
+	m_patches.append(patch);
 	endInsertRows();
 }
 
@@ -103,9 +105,9 @@ bool MinecraftProfile::remove(const int index)
 	}
 
 	beginRemoveRows(QModelIndex(), index, index);
-	VersionPatches.removeAt(index);
+	m_patches.removeAt(index);
 	endRemoveRows();
-	reapplySafe();
+	reapplyPatches();
 	saveCurrentOrder();
 	return true;
 }
@@ -113,7 +115,7 @@ bool MinecraftProfile::remove(const int index)
 bool MinecraftProfile::remove(const QString id)
 {
 	int i = 0;
-	for (auto patch : VersionPatches)
+	for (auto patch : m_patches)
 	{
 		if (patch->getID() == id)
 		{
@@ -137,7 +139,7 @@ bool MinecraftProfile::customize(int index)
 		qCritical() << "Patch" << patch->getID() << "could not be customized";
 		return false;
 	}
-	reapplySafe();
+	reapplyPatches();
 	saveCurrentOrder();
 	// FIXME: maybe later in unstable
 	// emit dataChanged(createIndex(index, 0), createIndex(index, columnCount(QModelIndex()) - 1));
@@ -157,25 +159,16 @@ bool MinecraftProfile::revertToBase(int index)
 		qCritical() << "Patch" << patch->getID() << "could not be reverted";
 		return false;
 	}
-	reapplySafe();
+	reapplyPatches();
 	saveCurrentOrder();
 	// FIXME: maybe later in unstable
 	// emit dataChanged(createIndex(index, 0), createIndex(index, columnCount(QModelIndex()) - 1));
 	return true;
 }
 
-QString MinecraftProfile::versionFileId(const int index) const
-{
-	if (index < 0 || index >= VersionPatches.size())
-	{
-		return QString();
-	}
-	return VersionPatches.at(index)->getID();
-}
-
 ProfilePatchPtr MinecraftProfile::versionPatch(const QString &id)
 {
-	for (auto file : VersionPatches)
+	for (auto file : m_patches)
 	{
 		if (file->getID() == id)
 		{
@@ -187,14 +180,14 @@ ProfilePatchPtr MinecraftProfile::versionPatch(const QString &id)
 
 ProfilePatchPtr MinecraftProfile::versionPatch(int index)
 {
-	if(index < 0 || index >= VersionPatches.size())
+	if(index < 0 || index >= m_patches.size())
 		return nullptr;
-	return VersionPatches[index];
+	return m_patches[index];
 }
 
 bool MinecraftProfile::isVanilla()
 {
-	for(auto patchptr: VersionPatches)
+	for(auto patchptr: m_patches)
 	{
 		if(patchptr->isCustom())
 			return false;
@@ -205,7 +198,7 @@ bool MinecraftProfile::isVanilla()
 bool MinecraftProfile::revertToVanilla()
 {
 	// remove patches, if present
-	auto VersionPatchesCopy = VersionPatches;
+	auto VersionPatchesCopy = m_patches;
 	for(auto & it: VersionPatchesCopy)
 	{
 		if (!it->isCustom())
@@ -217,13 +210,13 @@ bool MinecraftProfile::revertToVanilla()
 			if(!remove(it->getID()))
 			{
 				qWarning() << "Couldn't remove" << it->getID() << "from profile!";
-				reapplySafe();
+				reapplyPatches();
 				saveCurrentOrder();
 				return false;
 			}
 		}
 	}
-	reapplySafe();
+	reapplyPatches();
 	saveCurrentOrder();
 	return true;
 }
@@ -236,17 +229,17 @@ QVariant MinecraftProfile::data(const QModelIndex &index, int role) const
 	int row = index.row();
 	int column = index.column();
 
-	if (row < 0 || row >= VersionPatches.size())
+	if (row < 0 || row >= m_patches.size())
 		return QVariant();
 
-	auto patch = VersionPatches.at(row);
+	auto patch = m_patches.at(row);
 
 	if (role == Qt::DisplayRole)
 	{
 		switch (column)
 		{
 		case 0:
-			return VersionPatches.at(row)->getName();
+			return m_patches.at(row)->getName();
 		case 1:
 		{
 			if(patch->isCustom())
@@ -315,7 +308,7 @@ Qt::ItemFlags MinecraftProfile::flags(const QModelIndex &index) const
 
 int MinecraftProfile::rowCount(const QModelIndex &parent) const
 {
-	return VersionPatches.size();
+	return m_patches.size();
 }
 
 int MinecraftProfile::columnCount(const QModelIndex &parent) const
@@ -326,7 +319,7 @@ int MinecraftProfile::columnCount(const QModelIndex &parent) const
 void MinecraftProfile::saveCurrentOrder() const
 {
 	ProfileUtils::PatchOrder order;
-	for(auto item: VersionPatches)
+	for(auto item: m_patches)
 	{
 		if(!item->isMoveable())
 			continue;
@@ -347,7 +340,7 @@ void MinecraftProfile::move(const int index, const MoveDirection direction)
 		theirIndex = index + 1;
 	}
 
-	if (index < 0 || index >= VersionPatches.size())
+	if (index < 0 || index >= m_patches.size())
 		return;
 	if (theirIndex >= rowCount())
 		theirIndex = rowCount() - 1;
@@ -365,9 +358,9 @@ void MinecraftProfile::move(const int index, const MoveDirection direction)
 		return;
 	}
 	beginMoveRows(QModelIndex(), index, index, QModelIndex(), togap);
-	VersionPatches.swap(index, theirIndex);
+	m_patches.swap(index, theirIndex);
 	endMoveRows();
-	reapplySafe();
+	reapplyPatches();
 	saveCurrentOrder();
 }
 void MinecraftProfile::resetOrder()
@@ -376,20 +369,15 @@ void MinecraftProfile::resetOrder()
 	reload();
 }
 
-void MinecraftProfile::reapply()
-{
-	clear();
-	for(auto file: VersionPatches)
-	{
-		file->applyTo(this);
-	}
-}
-
-bool MinecraftProfile::reapplySafe()
+bool MinecraftProfile::reapplyPatches()
 {
 	try
 	{
-		reapply();
+		clear();
+		for(auto file: m_patches)
+		{
+			file->applyTo(this);
+		}
 	}
 	catch (Exception & error)
 	{
@@ -409,37 +397,37 @@ static void applyString(const QString & from, QString & to)
 
 void MinecraftProfile::applyMinecraftVersion(const QString& id)
 {
-	applyString(id, this->id);
+	applyString(id, this->m_minecraftVersion);
 }
 
 void MinecraftProfile::applyAppletClass(const QString& appletClass)
 {
-	applyString(appletClass, this->appletClass);
+	applyString(appletClass, this->m_appletClass);
 }
 
 void MinecraftProfile::applyMainClass(const QString& mainClass)
 {
-	applyString(mainClass, this->mainClass);
+	applyString(mainClass, this->m_mainClass);
 }
 
 void MinecraftProfile::applyMinecraftArguments(const QString& minecraftArguments)
 {
-	applyString(minecraftArguments, this->minecraftArguments);
+	applyString(minecraftArguments, this->m_minecraftArguments);
 }
 
 void MinecraftProfile::applyMinecraftVersionType(const QString& type)
 {
-	applyString(type, this->type);
+	applyString(type, this->m_minecraftVersionType);
 }
 
 void MinecraftProfile::applyMinecraftAssets(const QString& assets)
 {
-	applyString(assets, this->assets);
+	applyString(assets, this->m_minecraftAssets);
 }
 
 void MinecraftProfile::applyTraits(const QSet<QString>& traits)
 {
-	this->traits.unite(traits);
+	this->m_traits.unite(traits);
 }
 
 void MinecraftProfile::applyTweakers(const QStringList& tweakers)
@@ -448,13 +436,13 @@ void MinecraftProfile::applyTweakers(const QStringList& tweakers)
 	// FIXME: does order matter?
 	for (auto tweaker : tweakers)
 	{
-		this->tweakers += tweaker;
+		this->m_tweakers += tweaker;
 	}
 }
 
 void MinecraftProfile::applyJarMods(const QList<JarmodPtr>& jarMods)
 {
-	this->jarMods.append(jarMods);
+	this->m_jarMods.append(jarMods);
 }
 
 static int findLibraryByName(QList<LibraryPtr> haystack, const GradleSpecifier &needle)
@@ -499,49 +487,61 @@ void MinecraftProfile::applyLibrary(LibraryPtr library)
 	}
 	if(library->isNative())
 	{
-		insert(nativeLibraries);
+		insert(m_nativeLibraries);
 	}
 	else
 	{
-		insert(libraries);
+		insert(m_libraries);
+	}
+}
+
+void MinecraftProfile::applyProblemSeverity(ProblemSeverity severity)
+{
+	if (m_problemSeverity < severity)
+	{
+		m_problemSeverity = severity;
 	}
 }
 
 
 QString MinecraftProfile::getMinecraftVersion() const
 {
-	return id;
+	return m_minecraftVersion;
 }
 
 QString MinecraftProfile::getAppletClass() const
 {
-	return appletClass;
+	return m_appletClass;
 }
 
 QString MinecraftProfile::getMainClass() const
 {
-	return mainClass;
+	return m_mainClass;
 }
 
 const QSet<QString> &MinecraftProfile::getTraits() const
 {
-	return traits;
+	return m_traits;
 }
 
 const QStringList & MinecraftProfile::getTweakers() const
 {
-	return tweakers;
+	return m_tweakers;
 }
 
 bool MinecraftProfile::hasTrait(const QString& trait) const
 {
-	return traits.contains(trait);
+	return m_traits.contains(trait);
 }
 
+ProblemSeverity MinecraftProfile::getProblemSeverity() const
+{
+	return m_problemSeverity;
+}
 
 QString MinecraftProfile::getMinecraftVersionType() const
 {
-	return type;
+	return m_minecraftVersionType;
 }
 
 QString MinecraftProfile::getMinecraftAssets() const
@@ -549,35 +549,35 @@ QString MinecraftProfile::getMinecraftAssets() const
 	// HACK: deny april fools. my head hurts enough already.
 	QDate now = QDate::currentDate();
 	bool isAprilFools = now.month() == 4 && now.day() == 1;
-	if (assets.endsWith("_af") && !isAprilFools)
+	if (m_minecraftAssets.endsWith("_af") && !isAprilFools)
 	{
-		return assets.left(assets.length() - 3);
+		return m_minecraftAssets.left(m_minecraftAssets.length() - 3);
 	}
-	if (assets.isEmpty())
+	if (m_minecraftAssets.isEmpty())
 	{
 		return QLatin1Literal("legacy");
 	}
-	return assets;
+	return m_minecraftAssets;
 }
 
 QString MinecraftProfile::getMinecraftArguments() const
 {
-	return minecraftArguments;
+	return m_minecraftArguments;
 }
 
 const QList<JarmodPtr> & MinecraftProfile::getJarMods() const
 {
-	return jarMods;
+	return m_jarMods;
 }
 
 const QList<LibraryPtr> & MinecraftProfile::getLibraries() const
 {
-	return libraries;
+	return m_libraries;
 }
 
 const QList<LibraryPtr> & MinecraftProfile::getNativeLibraries() const
 {
-	return nativeLibraries;
+	return m_nativeLibraries;
 }
 
 
@@ -593,7 +593,7 @@ int MinecraftProfile::getFreeOrderNumber()
 {
 	int largest = 100;
 	// yes, I do realize this is dumb. The order thing itself is dumb. and to be removed next.
-	for(auto thing: VersionPatches)
+	for(auto thing: m_patches)
 	{
 		int order = thing->getOrder();
 		if(order > largest)
diff --git a/logic/minecraft/MinecraftProfile.h b/logic/minecraft/MinecraftProfile.h
index 529274d6..6e7e8f74 100644
--- a/logic/minecraft/MinecraftProfile.h
+++ b/logic/minecraft/MinecraftProfile.h
@@ -34,7 +34,6 @@ class OneSixInstance;
 class MULTIMC_LOGIC_EXPORT MinecraftProfile : public QAbstractListModel
 {
 	Q_OBJECT
-	friend class ProfileStrategy;
 
 public:
 	explicit MinecraftProfile(ProfileStrategy *strategy);
@@ -82,13 +81,10 @@ public:
 	/// clear the profile
 	void clear();
 
-	/// apply the patches. Throws all sorts of errors.
-	void reapply();
-
 	/// apply the patches. Catches all the errors and returns true/false for success/failure
-	bool reapplySafe();
+	bool reapplyPatches();
 
-public:
+public: /* application of profile variables from patches */
 	void applyMinecraftVersion(const QString& id);
 	void applyMainClass(const QString& mainClass);
 	void applyAppletClass(const QString& appletClass);
@@ -99,26 +95,24 @@ public:
 	void applyTweakers(const QStringList &tweakers);
 	void applyJarMods(const QList<JarmodPtr> &jarMods);
 	void applyLibrary(LibraryPtr library);
+	void applyProblemSeverity(ProblemSeverity severity);
 
-public:
+public: /* getters for proifile variables */
 	QString getMinecraftVersion() const;
 	QString getMainClass() const;
 	QString getAppletClass() const;
 	QString getMinecraftVersionType() const;
 	QString getMinecraftAssets() const;
 	QString getMinecraftArguments() const;
-	QString getVanillaMinecraftArguments() const;
 	const QSet<QString> & getTraits() const;
 	const QStringList & getTweakers() const;
 	const QList<JarmodPtr> & getJarMods() const;
 	const QList<LibraryPtr> & getLibraries() const;
 	const QList<LibraryPtr> & getNativeLibraries() const;
 	bool hasTrait(const QString & trait) const;
+	ProblemSeverity getProblemSeverity() const;
 
 public:
-	/// get file ID of the patch file at #
-	QString versionFileId(const int index) const;
-
 	/// get the profile patch by id
 	ProfilePatchPtr versionPatch(const QString &id);
 
@@ -134,15 +128,15 @@ public:
 	/// Add the patch object to the internal list of patches
 	void appendPatch(ProfilePatchPtr patch);
 
-protected: /* data */
-	/// the ID - determines which jar to use! ACTUALLY IMPORTANT!
-	QString id;
+private: /* data */
+	/// the version of Minecraft - jar to use
+	QString m_minecraftVersion;
 
 	/// Release type - "release" or "snapshot"
-	QString type;
+	QString m_minecraftVersionType;
 
 	/// Assets type - "legacy" or a version ID
-	QString assets;
+	QString m_minecraftAssets;
 
 	/**
 	 * arguments that should be used for launching minecraft
@@ -150,28 +144,30 @@ protected: /* data */
 	 * ex: "--username ${auth_player_name} --session ${auth_session}
 	 *      --version ${version_name} --gameDir ${game_directory} --assetsDir ${game_assets}"
 	 */
-	QString minecraftArguments;
+	QString m_minecraftArguments;
 
 	/// A list of all tweaker classes
-	QStringList tweakers;
+	QStringList m_tweakers;
 
 	/// The main class to load first
-	QString mainClass;
+	QString m_mainClass;
 
 	/// The applet class, for some very old minecraft releases
-	QString appletClass;
+	QString m_appletClass;
 
 	/// the list of libraries
-	QList<LibraryPtr> libraries;
+	QList<LibraryPtr> m_libraries;
 
 	/// the list of native libraries
-	QList<LibraryPtr> nativeLibraries;
+	QList<LibraryPtr> m_nativeLibraries;
 
 	/// traits, collected from all the version files (version files can only add)
-	QSet<QString> traits;
+	QSet<QString> m_traits;
 
 	/// A list of jar mods. version files can add those.
-	QList<JarmodPtr> jarMods;
+	QList<JarmodPtr> m_jarMods;
+
+	ProblemSeverity m_problemSeverity = PROBLEM_NONE;
 
 	/*
 	FIXME: add support for those rules here? Looks like a pile of quick hacks to me though.
@@ -193,7 +189,10 @@ protected: /* data */
 	}
 	*/
 	// QList<Rule> rules;
-private:
-	QList<ProfilePatchPtr> VersionPatches;
+
+	/// list of attached profile patches
+	QList<ProfilePatchPtr> m_patches;
+
+	/// strategy used for profile operations
 	ProfileStrategy *m_strategy = nullptr;
 };
diff --git a/logic/minecraft/MinecraftVersion.cpp b/logic/minecraft/MinecraftVersion.cpp
index a2897950..a3855481 100644
--- a/logic/minecraft/MinecraftVersion.cpp
+++ b/logic/minecraft/MinecraftVersion.cpp
@@ -169,6 +169,7 @@ void MinecraftVersion::applyTo(MinecraftProfile *profile)
 	profile->applyMinecraftArguments(" ${auth_player_name} ${auth_session}"); // all builtin versions are legacy
 	profile->applyMinecraftVersionType(m_type);
 	profile->applyTraits(m_traits);
+	profile->applyProblemSeverity(m_problemSeverity);
 }
 
 int MinecraftVersion::getOrder()
diff --git a/logic/minecraft/ProfileUtils.cpp b/logic/minecraft/ProfileUtils.cpp
index a1ca4507..ef9b3b28 100644
--- a/logic/minecraft/ProfileUtils.cpp
+++ b/logic/minecraft/ProfileUtils.cpp
@@ -99,20 +99,42 @@ bool readOverrideOrders(QString path, PatchOrder &order)
 	return true;
 }
 
+static VersionFilePtr createErrorVersionFile(QString fileId, QString filepath, QString error)
+{
+	auto outError = std::make_shared<VersionFile>();
+	outError->fileId = outError->name = fileId;
+	outError->filename = filepath;
+	outError->addProblem(PROBLEM_ERROR, error);
+	return outError;
+}
+
+static VersionFilePtr guardedParseJson(const QJsonDocument & doc,const QString &fileId,const QString &filepath,const bool &requireOrder)
+{
+	try
+	{
+		return OneSixVersionFormat::versionFileFromJson(doc, filepath, requireOrder);
+	}
+	catch (Exception & e)
+	{
+		return createErrorVersionFile(fileId, filepath, e.cause());
+	}
+}
+
 VersionFilePtr parseJsonFile(const QFileInfo &fileInfo, const bool requireOrder)
 {
 	QFile file(fileInfo.absoluteFilePath());
 	if (!file.open(QFile::ReadOnly))
 	{
-		throw JSONValidationError(QObject::tr("Unable to open the version file %1: %2.")
-									  .arg(fileInfo.fileName(), file.errorString()));
+		auto errorStr = QObject::tr("Unable to open the version file %1: %2.").arg(fileInfo.fileName(), file.errorString());
+		return createErrorVersionFile(fileInfo.completeBaseName(), fileInfo.absoluteFilePath(), errorStr);
 	}
 	QJsonParseError error;
 	auto data = file.readAll();
 	QJsonDocument doc = QJsonDocument::fromJson(data, &error);
+	file.close();
 	if (error.error != QJsonParseError::NoError)
 	{
-		int line = 0;
+		int line = 1;
 		int column = 0;
 		for(int i = 0; i < error.offset; i++)
 		{
@@ -124,12 +146,12 @@ VersionFilePtr parseJsonFile(const QFileInfo &fileInfo, const bool requireOrder)
 			}
 			column++;
 		}
-		throw JSONValidationError(
-			QObject::tr("Unable to process the version file %1: %2 at line %3 column %4.")
+		auto errorStr = QObject::tr("Unable to process the version file %1: %2 at line %3 column %4.")
 				.arg(fileInfo.fileName(), error.errorString())
-				.arg(line).arg(column));
+				.arg(line).arg(column);
+		return createErrorVersionFile(fileInfo.completeBaseName(), fileInfo.absoluteFilePath(), errorStr);
 	}
-	return OneSixVersionFormat::versionFileFromJson(doc, file.fileName(), requireOrder);
+	return guardedParseJson(doc, fileInfo.completeBaseName(), fileInfo.absoluteFilePath(), requireOrder);
 }
 
 VersionFilePtr parseBinaryJsonFile(const QFileInfo &fileInfo)
@@ -137,18 +159,17 @@ VersionFilePtr parseBinaryJsonFile(const QFileInfo &fileInfo)
 	QFile file(fileInfo.absoluteFilePath());
 	if (!file.open(QFile::ReadOnly))
 	{
-		throw JSONValidationError(QObject::tr("Unable to open the version file %1: %2.")
-									  .arg(fileInfo.fileName(), file.errorString()));
+		auto errorStr = QObject::tr("Unable to open the version file %1: %2.").arg(fileInfo.fileName(), file.errorString());
+		return createErrorVersionFile(fileInfo.completeBaseName(), fileInfo.absoluteFilePath(), errorStr);
 	}
 	QJsonDocument doc = QJsonDocument::fromBinaryData(file.readAll());
 	file.close();
 	if (doc.isNull())
 	{
 		file.remove();
-		throw JSONValidationError(
-			QObject::tr("Unable to process the version file %1.").arg(fileInfo.fileName()));
+		throw JSONValidationError(QObject::tr("Unable to process the version file %1.").arg(fileInfo.fileName()));
 	}
-	return OneSixVersionFormat::versionFileFromJson(doc, file.fileName(), false);
+	return guardedParseJson(doc, fileInfo.completeBaseName(), fileInfo.absoluteFilePath(), false);
 }
 
 void removeLwjglFromPatch(VersionFilePtr patch)
diff --git a/logic/minecraft/VersionFile.cpp b/logic/minecraft/VersionFile.cpp
index de6eff4c..9cda717e 100644
--- a/logic/minecraft/VersionFile.cpp
+++ b/logic/minecraft/VersionFile.cpp
@@ -50,4 +50,5 @@ void VersionFile::applyTo(MinecraftProfile *profile)
 	{
 		profile->applyLibrary(library);
 	}
+	profile->applyProblemSeverity(getProblemSeverity());
 }
diff --git a/logic/minecraft/forge/ForgeInstaller.cpp b/logic/minecraft/forge/ForgeInstaller.cpp
index 9ed040de..86ba6176 100644
--- a/logic/minecraft/forge/ForgeInstaller.cpp
+++ b/logic/minecraft/forge/ForgeInstaller.cpp
@@ -82,6 +82,17 @@ void ForgeInstaller::prepare(const QString &filename, const QString &universalUr
 	}
 	catch(Exception &err)
 	{
+		qWarning() << "Forge: Fatal error while parsing version file:" << err.what();
+		return;
+	}
+
+	for(auto problem: newVersion->getProblems())
+	{
+		qWarning() << "Forge: Problem found: " << problem.getDescription();
+	}
+	if(newVersion->getProblemSeverity() == ProblemSeverity::PROBLEM_ERROR)
+	{
+		qWarning() << "Forge: Errors found while parsing version file";
 		return;
 	}
 
diff --git a/logic/minecraft/onesix/OneSixInstance.cpp b/logic/minecraft/onesix/OneSixInstance.cpp
index 3e83ff1c..f8b274ff 100644
--- a/logic/minecraft/onesix/OneSixInstance.cpp
+++ b/logic/minecraft/onesix/OneSixInstance.cpp
@@ -463,23 +463,17 @@ QString OneSixInstance::currentVersionId() const
 
 void OneSixInstance::reloadProfile()
 {
-	try
-	{
-		m_profile->reload();
-		unsetFlag(VersionBrokenFlag);
-		emit versionReloaded();
-	}
-	catch (VersionIncomplete &error)
+	m_profile->reload();
+	auto severity = m_profile->getProblemSeverity();
+	if(severity == ProblemSeverity::PROBLEM_ERROR)
 	{
+		setFlag(VersionBrokenFlag);
 	}
-	catch (Exception &error)
+	else
 	{
-		m_profile->clear();
-		setFlag(VersionBrokenFlag);
-		// TODO: rethrow to show some error message(s)?
-		emit versionReloaded();
-		throw;
+		unsetFlag(VersionBrokenFlag);
 	}
+	emit versionReloaded();
 }
 
 void OneSixInstance::clearProfile()
diff --git a/logic/minecraft/onesix/OneSixProfileStrategy.cpp b/logic/minecraft/onesix/OneSixProfileStrategy.cpp
index baec635e..3ae055c0 100644
--- a/logic/minecraft/onesix/OneSixProfileStrategy.cpp
+++ b/logic/minecraft/onesix/OneSixProfileStrategy.cpp
@@ -407,7 +407,7 @@ bool OneSixProfileStrategy::installJarMods(QStringList filepaths)
 		profile->appendPatch(f);
 	}
 	profile->saveCurrentOrder();
-	profile->reapplySafe();
+	profile->reapplyPatches();
 	return true;
 }
 
diff --git a/logic/minecraft/onesix/OneSixUpdate.cpp b/logic/minecraft/onesix/OneSixUpdate.cpp
index 814cde18..b49f09b6 100644
--- a/logic/minecraft/onesix/OneSixUpdate.cpp
+++ b/logic/minecraft/onesix/OneSixUpdate.cpp
@@ -174,19 +174,10 @@ void OneSixUpdate::jarlibStart()
 	setStatus(tr("Getting the library files from Mojang..."));
 	qDebug() << m_inst->name() << ": downloading libraries";
 	OneSixInstance *inst = (OneSixInstance *)m_inst;
-	try
+	inst->reloadProfile();
+	if(inst->flags() & BaseInstance::VersionBrokenFlag)
 	{
-		inst->reloadProfile();
-	}
-	catch (Exception &e)
-	{
-		emitFailed(e.cause());
-		return;
-	}
-	catch (...)
-	{
-		emitFailed(tr("Failed to load the version description file for reasons unknown."));
-		return;
+		emitFailed(tr("Failed to load the version description files - check the instance for errors."));
 	}
 
 	// Build a list of URLs that will need to be downloaded.