diff --git a/src/app/main.cpp b/src/app/main.cpp
index 88d24340..9c636f64 100644
--- a/src/app/main.cpp
+++ b/src/app/main.cpp
@@ -145,7 +145,14 @@ int main(int argc, char *argv[])
 			return 0;
 		}
 
-		commandLineParser.projectLoad();
+		if (commandLineParser.hasError() )
+		{
+			std::cout << commandLineParser.getError() << std::endl;
+		}
+		else
+		{
+			commandLineParser.projectLoad();
+		}
 		return qtApp.exec();
 	}
 	else
@@ -176,7 +183,14 @@ int main(int argc, char *argv[])
 		Application::getInstance()->addProjectFactoryModule(std::make_shared<ProjectFactoryModuleCpp>());
 		Application::getInstance()->addProjectFactoryModule(std::make_shared<ProjectFactoryModuleJava>());
 
-		commandLineParser.projectLoad();
+		if (commandLineParser.hasError())
+		{
+			Application::getInstance()->handleDialog(commandLineParser.getError());
+		}
+		else
+		{
+			commandLineParser.projectLoad();
+		}
 
 		utility::loadFontsFromDirectory(ResourcePaths::getFontsPath(), ".otf");
 		utility::loadFontsFromDirectory(ResourcePaths::getFontsPath(), ".ttf");
diff --git a/src/lib/utility/commandline/CommandLineParser.cpp b/src/lib/utility/commandline/CommandLineParser.cpp
index 09ed2514..c0a0f771 100644
--- a/src/lib/utility/commandline/CommandLineParser.cpp
+++ b/src/lib/utility/commandline/CommandLineParser.cpp
@@ -120,6 +120,16 @@ void CommandLineParser::processLicense(const bool isLoaded)
 	m_withoutGUI = true;
 }
 
+bool CommandLineParser::hasError()
+{
+	return !m_errorString.empty();
+}
+
+std::string CommandLineParser::getError()
+{
+	return m_errorString;
+}
+
 CommandLineParser::~CommandLineParser()
 {
 }
@@ -142,36 +152,28 @@ bool CommandLineParser::startedWithLicense()
 void CommandLineParser::processProjectfile(const std::string& file)
 {
 	FilePath projectfile(file);
-	bool isValidProjectfile = true;
-	std::string errorstring = "Provided Projectfile is not valid:\n";
-	std::string errorProjectfile = "\tProvided Projectfile('" + projectfile.fileName() + ") ";
+	const std::string errorstring =
+		"Provided Projectfile is not valid:\n* Provided Projectfile('" + projectfile.fileName() + "') ";
 	if (!projectfile.exists())
 	{
-		errorstring += errorProjectfile + " does not exist\n";
-		isValidProjectfile = false;
+		m_errorString = errorstring + " does not exist";
+		return;
 	}
 
 	if (projectfile.extension() != ".coatiproject")
 	{
-		errorstring += errorProjectfile + " has a wrong fileending\n";
-		isValidProjectfile = false;
+		m_errorString = errorstring + " has a wrong fileending";
+		return;
 	}
 
 	std::shared_ptr<ConfigManager> configManager = ConfigManager::createEmpty();
 	if (!configManager->load(TextAccess::createFromFile(projectfile.str())))
 	{
-		errorstring += errorProjectfile + " could not be loaded\n";
-		isValidProjectfile = false;
+		m_errorString = errorstring + " could not be loaded(invalid)";
+		return;
 	}
 
-	if (isValidProjectfile)
-	{
-		m_projectFile = projectfile;
-	}
-	else
-	{
-		std::cout << errorstring << std::endl;
-	}
+	m_projectFile = projectfile;
 }
 
 void CommandLineParser::projectLoad()
diff --git a/src/lib/utility/commandline/CommandLineParser.h b/src/lib/utility/commandline/CommandLineParser.h
index b1a019b2..c86bc679 100644
--- a/src/lib/utility/commandline/CommandLineParser.h
+++ b/src/lib/utility/commandline/CommandLineParser.h
@@ -16,6 +16,8 @@ public:
 	bool exitApplication();
 	void projectLoad();
 	bool startedWithLicense();
+	bool hasError();
+	std::string getError();
 	License getLicense();
 private:
 	void processProjectfile(const std::string& file);
@@ -27,6 +29,7 @@ private:
 	bool m_withLicense;
 	bool m_withoutGUI;
 
+	std::string m_errorString;
 	License m_license;
 };
 
diff --git a/src/lib_gui/qt/window/QtStartScreen.cpp b/src/lib_gui/qt/window/QtStartScreen.cpp
index 7020aaf4..49e8d2c2 100644
--- a/src/lib_gui/qt/window/QtStartScreen.cpp
+++ b/src/lib_gui/qt/window/QtStartScreen.cpp
@@ -78,7 +78,6 @@ QtStartScreen::QtStartScreen(QWidget *parent)
 	: QtWindow(parent)
 {
 	this->raise();
-	setWindowModality(Qt::ApplicationModal);
 }
 
 QSize QtStartScreen::sizeHint() const