Commented Unassigned: Error when opening Resx Manager [1133]

This is from Output

ResX Resource Manager loaded.
Home: http://resxresourcemanager.codeplex.com/
Report issues: http://resxresourcemanager.codeplex.com/workitem/list/basic
Support the project by adding a short review: http://visualstudiogallery.msdn.microsoft.com/3b64e04c-e8de-4b97-8358-06c73a97cc68
Resolve assembly DataGridExtensions, Version=1.0.11.0, Culture=neutral, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, Version=1.0.11.0, Culture=neutral, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, Version=1.0.11.0, Culture=neutral, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, Version=1.0.11.0, Culture=neutral, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Resolve assembly DataGridExtensions, PublicKeyToken=43de855f87de903a
Error: Assembly not found!
Error: System.Windows.Markup.XamlParseException: Could not load file or assembly 'DataGridExtensions, PublicKeyToken=43de855f87de903a' or one of its dependencies. The system cannot find the file specified. ---> System.IO.FileNotFoundException: Could not load file or assembly 'DataGridExtensions, PublicKeyToken=43de855f87de903a' or one of its dependencies. The system cannot find the file specified.
at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)
at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
at System.Windows.Baml2006.Baml2006SchemaContext.ResolveAssembly(BamlAssembly bamlAssembly)
at System.Windows.Baml2006.Baml2006SchemaContext.ResolveBamlTypeToType(BamlType bamlType)
at System.Windows.Baml2006.Baml2006SchemaContext.ResolveBamlType(BamlType bamlType, Int16 typeId)
at System.Windows.Baml2006.Baml2006SchemaContext.GetXamlType(Int16 typeId)
at System.Windows.Baml2006.Baml2006SchemaContext.GetProperty(Int16 propertyId, XamlType parentType)
at System.Windows.Baml2006.Baml2006Reader.Process_PropertyCustom()
at System.Windows.Baml2006.Baml2006Reader.Process_OneBamlRecord()
at System.Windows.Baml2006.Baml2006Reader.Process_BamlRecords()
at System.Windows.Baml2006.Baml2006Reader.Read()
at System.Windows.Markup.WpfXamlLoader.TransformNodes(XamlReader xamlReader, XamlObjectWriter xamlWriter, Boolean onlyLoadOneNode, Boolean skipJournaledProperties, Boolean shouldPassLineNumberInfo, IXamlLineInfo xamlLineInfo, IXamlLineInfoConsumer xamlLineInfoConsumer, XamlContextStack`1 stack, IStyleConnector styleConnector)
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
--- End of inner exception stack trace ---
at System.Windows.Markup.WpfXamlLoader.Load(XamlReader xamlReader, IXamlObjectWriterFactory writerFactory, Boolean skipJournaledProperties, Object rootObject, XamlObjectWriterSettings settings, Uri baseUri)
at System.Windows.Markup.WpfXamlLoader.LoadBaml(XamlReader xamlReader, Boolean skipJournaledProperties, Object rootObject, XamlAccessLevel accessLevel, Uri baseUri)
at System.Windows.Markup.XamlReader.LoadBaml(Stream stream, ParserContext parserContext, Object parent, Boolean closeStream)
at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator)
at tomenglertde.ResXManager.View.ResourceView.InitializeComponent()
at tomenglertde.ResXManager.View.ResourceView..ctor()
at tomenglertde.ResXManager_VSIX.MyToolWindow.OnCreate()
Comments: ** Comment from web user: tomenglert **

Usually the folder should be something like.

C:\Users\<user name>\AppData\Local\ __Microsoft\VisualStudio\12.0\Extensions__ \<some unique id>

These are the files that should be in the folder after successful installation of the extension:

<de>
200x200.png
32x32.png
DataGridExtensions.dll
DocumentFormat.OpenXml.dll
EnvDTE.dll
extension.vsixmanifest
License.txt
ResourceManager.ico
ResXManager.Model.dll
ResXManager.View.dll
ResXManager.VSIX.dll
ResXManager.VSIX.pkgdef

Can you check the content of your extensions folder after a successful install?