Error using without a solution

[GitHubror]

Start VS2015 without a solution. The Auto Merge view reports a stackview:
System.Windows.Markup.XamlParseException: Falscher Parameter. (Ausnahme von HRESULT: 0x80070057 (E_INVALIDARG)) ---> System.ArgumentException: Falscher Parameter. (Ausnahme von HRESULT: 0x80070057 (E_INVALIDARG))
bei System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
bei System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
bei System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
bei System.Reflection.Assembly.Load(AssemblyName assemblyRef)
bei System.Windows.Baml2006.Baml2006SchemaContext.ResolveAssembly(BamlAssembly bamlAssembly)
bei System.Windows.Baml2006.Baml2006SchemaContext.ResolveBamlTypeToType(BamlType bamlType)
bei System.Windows.Baml2006.Baml2006SchemaContext.ResolveBamlType(BamlType bamlType, Int16 typeId)
bei System.Windows.Baml2006.Baml2006SchemaContext.GetXamlType(Int16 typeId)
bei System.Windows.Baml2006.Baml2006SchemaContext.GetProperty(Int16 propertyId, XamlType parentType)
bei System.Windows.Baml2006.Baml2006Reader.Process_PropertyArrayStart()
bei System.Windows.Baml2006.Baml2006Reader.Process_OneBamlRecord()
bei System.Windows.Baml2006.Baml2006Reader.Process_BamlRecords()
bei System.Windows.Baml2006.Baml2006Reader.Read()
bei System.Windows.Markup.WpfXamlLoader.TransformNodes(XamlReader xamlReader, XamlObjectWriter xamlWriter, Boolean onlyLoadOneNode, Boolean skipJournaledProperties, Boolean shouldPassLineNumberInfo, IXamlLineInfo xamlLineInfo, IXamlLineInfoConsumer xamlLineInfoConsumer, XamlContextStack`1 stack, IStyleConnector styleConnector)
bei System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
--- Ende der internen Ausnahmestapelüberwachung ---
bei System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
bei System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
bei System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
bei System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
bei AutoMerge.RecentChangesetsView.InitializeComponent()
bei AutoMerge.RecentChangesetsSection.CreateView(SectionInitializeEventArgs e)
bei Microsoft.TeamFoundation.Controls.WPF.TeamExplorer.TeamExplorerSectionBase.Initialize(Object sender, SectionInitializeEventArgs e)
bei AutoMerge.Base.TeamExplorerSectionBase.Initialize(Object sender, SectionInitializeEventArgs e)
bei Microsoft.TeamFoundation.Controls.WPF.TeamExplorer.Framework.TeamExplorerSectionHost.Initialize(Object context)