Visual Studio 2010 WPF Designer issues -

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i using: visual studio 2010 professional, silverlight 4 toolkit

the wpf designer don't show (invisible) - while component toolbox showing relevant controls, , windows->windows option shows designer active. xaml me, regardless of complexity. have tried /resetskippkgs no avail. had coderush , devexpress installed (demo) version removed both since. can along xaml switching source code /text editor, boils chops run app find out have made silly mistake in xaml (while preview sort out quicker, , no, please don't suggest expression blend non-nonsensical me switch continuously between these applications).

when switch wpf designer open encoding following error - assume related issue not showing xaml editor/designer in non-encoding:

an unhandled exception has occurred

click reload designer

system.nullreferenceexception

object reference not set instance of object.

at ms.internal.providers.vsdesignercontext.vsdesignercontextholder..ctor(iserviceprovider services, vsdesignercontext context, object docdata) @ ms.internal.providers.vsdesignercontext.getcontext(iserviceprovider services, ivswindowframe frame, boolean createifnotexist) @ ms.internal.designer.tabbededitorpane.ms.internal.designer.itabbededitorservice.get_designercontext() @ ms.internal.designer.designerpane.initializedesigner()

i have googled silly, no avail. thinking reinstalling visual studio - last resort. hate fixing things reinstalling, rebooting etc.

any guru magical answer?

i got exact same exception today , solved killing few gdi hungry apps. can see number of gdi objects process using in processes tab of task manager (you need add column using view -> select columns).


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