Calendar view crashes

I am using the latest beta.

System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.Windows.Markup.XamlParseException: Cannot convert string '/Wieldy.Client;Component/Resources/ArrowLeft.png' in attribute 'SmallImage' to object of type 'System.Windows.Media.ImageSource'. Could not load file or assembly 'Wieldy.Client, Culture=neutral' or one of its dependencies. Das System kann die angegebene Datei nicht finden. Error at object 'Wieldy.Client.Controls.BaseButton' in markup file 'Wieldy;component/controls/calendar/monthview.xaml'. ---> System.IO.FileNotFoundException: Could not load file or assembly 'Wieldy.Client, Culture=neutral' or one of its dependencies. Das System kann die angegebene Datei nicht finden.
File name: 'Wieldy.Client, Culture=neutral'
   at System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
   at System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection)
   at System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection)
   at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
   at System.Windows.Navigation.BaseUriHelper.GetLoadedAssembly(String assemblyName, String assemblyVersion, String assemblyKey)
   at MS.Internal.AppModel.ResourceContainer.GetResourceManagerWrapper(Uri uri, String& partName, Boolean& isContentFile)
   at MS.Internal.AppModel.ResourceContainer.GetPartCore(Uri uri)
   at System.IO.Packaging.Package.GetPartHelper(Uri partUri)
   at System.IO.Packaging.Package.GetPart(Uri partUri)
   at System.IO.Packaging.PackWebResponse.CachedResponse.GetResponseStream()
   at System.IO.Packaging.PackWebResponse.GetResponseStream()
   at System.IO.Packaging.PackWebResponse.get_ContentType()
   at System.Windows.Media.Imaging.BitmapDecoder.SetupDecoderFromUriOrStream(Uri uri, Stream stream, BitmapCacheOption cacheOption, Guid& clsId, Boolean& isOriginalWritable, Stream& uriStream, UnmanagedMemoryStream& unmanagedMemoryStream, SafeFileHandle& safeFilehandle)
   at System.Windows.Media.Imaging.BitmapDecoder.CreateFromUriOrStream(Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, RequestCachePolicy uriCachePolicy, Boolean insertInDecoderCache)
   at System.Windows.Media.Imaging.BitmapFrame.CreateFromUriOrStream(Uri baseUri, Uri uri, Stream stream, BitmapCreateOptions createOptions, BitmapCacheOption cacheOption, RequestCachePolicy uriCachePolicy)
   at System.Windows.Media.ImageSourceConverter.ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, Object value)
   at System.ComponentModel.TypeConverter.ConvertFromString(ITypeDescriptorContext context, CultureInfo culture, String text)
   at System.Windows.Markup.XamlTypeMapper.ParseProperty(Object targetObject, Type propType, String propName, Object dpOrPiOrFi, ITypeDescriptorContext typeContext, ParserContext parserContext, String value, Int16 converterTypeId)

WRN: Assembly binding logging is turned OFF.
To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1.
Note: There is some performance penalty associated with assembly bind failure logging.
To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

   --- End of inner exception stack trace ---
   at System.Windows.Markup.XamlParseException.ThrowException(String message, Exception innerException, Int32 lineNumber, Int32 linePosition, Uri baseUri, XamlObjectIds currentXamlObjectIds, XamlObjectIds contextXamlObjectIds, Type objectType)
   at System.Windows.Markup.XamlParseException.ThrowException(ParserContext parserContext, Int32 lineNumber, Int32 linePosition, String message, Exception innerException)
   at System.Windows.Markup.XamlTypeMapper.ParseProperty(Object targetObject, Type propType, String propName, Object dpOrPiOrFi, ITypeDescriptorContext typeContext, ParserContext parserContext, String value, Int16 converterTypeId)
   at System.Windows.Markup.BamlRecordReader.ParseProperty(Object element, Type propertyType, String propertyName, Object dpOrPi, String attribValue, Int16 converterTypeId)
   at System.Windows.Markup.BamlRecordReader.ReadPropertyRecordBase(String attribValue, Int16 attributeId, Int16 converterTypeId)
   at System.Windows.Markup.BamlRecordReader.ReadPropertyConverterRecord(BamlPropertyWithConverterRecord bamlPropertyRecord)
   at System.Windows.Markup.BamlRecordReader.ReadRecord(BamlRecord bamlRecord)
   at System.Windows.Markup.BamlRecordReader.Read(Boolean singleRecord)
   at System.Windows.Markup.TreeBuilderBamlTranslator.ParseFragment()
   at System.Windows.Markup.TreeBuilder.Parse()
   at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
   at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
   at Wieldy.Client.Controls.Calendar.MonthView.InitializeComponent()
   at Wieldy.Client.Controls.Calendar.MonthView..ctor()
   at Wieldy.Client.Modes.Todo.ActionListControl.RefreshActions()
   at Wieldy.Client.Modes.Todo.ActionListControl.OnSelectedTodoViewModeChanged()
   at Wieldy.Addins.Sdk.NotifyEventHandler.Invoke()
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.RuntimeMethodHandle.InvokeMethodFast(Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Delegate.DynamicInvokeImpl(Object[] args)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
   at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)