Live writer has unexpected error within application


  • I have been using Live Writer for some time now with Firefox. All of a sudden, I am receiving an error message when I open WLW that says "Windows Live Writer has encountered a problem: Specified cast is not valid". I uninstalled WLW and reinstalled. Got same error. I can view my blog from WLW and Manage my blog from WLW but I get the error again if I try to create a new post

    I have gone to %UserProfile%\Application Data\Windows Live Writer\Keywords and Deleted all of these files.


    WindowsLiveWriter,4520,Fail,00009,19-Dec-2010 16:17:26.890,"Unexpected Error Occurred
    Exception Details:
    An unexpected error has occurred within the application.
    System.InvalidCastException: Specified cast is not valid.
       at WindowsLive.Writer.Interop.Com.IServiceProvider.QueryService(Guid& guid, Guid& riid, Object& Obj)
       at WindowsLive.Writer.Interop.Com.ComHelper.QueryService(Object source, Guid serviceID, Guid requestedIID)
       at WindowsLive.Writer.Mshtml.MshtmlEditor.AddEditDesigner()
       at WindowsLive.Writer.Mshtml.MshtmlEditor.ReadyStateChangedHandler(Object sender, EventArgs ea)",""

    Sunday, December 19, 2010 9:19 PM