The problem is most often seen when :

1) mediaportal.xml has a yoffset value less than 0.
yoffset is located in the "tvguide" section of the file.
2) when using the "remember last active module"
3) when last module was tvguide.

the result is a visusally broken tvguide.
MP does not crash.

a fix should be provided for both tvguide as well as radio guide.

h4. Additional Information
2011-06-23 11:01:08.262333 [Debug][MPMain(1)]: TextureManager: CleanupThumbs()
2011-06-23 11:01:08.316336 [Debug][MPMain(1)]: DialogWindow: TvPlugin.TVGuide init
2011-06-23 11:01:08.404341 [Debug][MPMain(1)]: TvGuideBase: System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
   at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
   at System.ThrowHelper.ThrowArgumentOutOfRangeException()
   at System.Collections.Generic.List`1.get_Item(Int32 index)
   at TvPlugin.TvGuideBase.Update(Boolean selectCurrentShow) in C:\Development\TvEngine.clean\TVLibrary\TvPlugin\TvPlugin\TvGuideBase.cs:line 1380
   at TvPlugin.TvGuideBase.OnMessage(GUIMessage message) in C:\Development\TvEngi