My partner has been using WLM for at least a year and has been experiencing an "unknown error" sporadically during that time which always seems to happen in the process of composing a new email. I have tried creating a new message store location and importing the messages from the old store but the problem still occurs. Here is an example of the error message: Wednesday, 22 June 2011 11:20:03 AM Version: 15.4.3508.1109 OS Version: Microsoft Windows NT 6.1.7600.0 Runtime version: 2.0.50727.4959 Shutdown started: False Program: "C:\Program Files (x86)\Windows Live\Mail\wlmail.exe" Memory Load: 39% Total Physical: 4090 MB Available Physical: 2495 MB Total Page File: 8179 MB Available Page File: 6002 MB Total Virtual: 2047 MB Available Virtual: 1487 MB Available Extented Virtual: 0 MB0 Unexpected Error Occurred An unexpected error has occurred within the application. System.NullReferenceException: Object reference not set to an instance of an object. at WindowsLive.Writer.PostEditor.MainFrameWindowAdapter.CloseSubjectSpellcheckWordRange() at WindowsLive.Writer.HtmlEditor.HtmlEditorControl.CheckSpelling(String contextDictionaryPath) at WindowsLive.Writer.PostEditor.ContentEditor.CheckSpelling(String spellingContextDirectory) at WindowsLive.Writer.PostEditor.TextEditingCommandDispatcher.CheckSpellingCommand.ExecuteWithArgs(ExecuteEventHandlerArgs args) at WindowsLive.Writer.PostEditor.TextEditingCommandDispatcher.TextEditingCommand.ExecuteWithArgs(Object sender, ExecuteEventHandlerArgs ea) at WindowsLive.Writer.ApplicationFramework.Command.RaiseEvent(Object eventKey, ExecuteEventHandlerArgs e) at WindowsLive.Writer.ApplicationFramework.Command.OnExecute(ExecuteEventHandlerArgs args)

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