Blend: Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED)) in generic.xaml

when ever try load customcontrol resource dictionary get.

exception: there error building project. please rebuild project.

stacktrace: empty

exception: catastrophic failure (exception hresult: 0x8000ffff (e_unexpected))

at windows.ui.xaml.automation.automationproperties.getname(dependencyobject element)

and documents show exception:

system.nullreferenceexception: object reference not set instance of object.
   @ microsoft.expression.designsurface.viewmodel.nodeviewpair.get_nodepath()
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.editcontexthistory.drillinpathisvalid(documentnodepath selectedelementpath, nodeviewpair drillincontainer)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.editcontexthistory.getdrillinentry(documentnodepath selectedelementpath)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.editcontexthistory.getchildnodeviewpair(editcontext editcontext)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.multihistorywalker.<>c__displayclass22.<walkcontextsbelowactive>b__1f(editcontext context, boolean isghosted)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.editcontexthistory.walk(editcontext startatcontext, editcontext stopatcontext, boolean reversewalk, singlehistorycallback callback)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.editcontexthistory.walk(editcontext startatcontext, boolean reversewalk, singlehistorycallback callback)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.multihistorywalker.walkcontextsbelowactive(multihistorycallback callback)
   @ microsoft.expression.designsurface.viewmodel.editcontextmanager.multihistorywalker.walk(boolean reversewalk, multihistorycallback callback)
   @ microsoft.expression.designsurface.userinterface.datapane.datacontextancestorwalker.geteditcontextchain(sceneviewmodel viewmodel)
   @ microsoft.expression.designsurface.userinterface.datapane.datacontextancestorwalker.initializepath(scenenode targetnode, iproperty targetproperty)
   @ microsoft.expression.designsurface.userinterface.datapane.datacontextevaluator.evaluate(scenenode target, ipropertyid targetproperty, boolean isforsettingvalue)
   @ microsoft.expression.designsurface.userinterface.datapane.datapanelmodel.updateactivedatacontext()
   @ microsoft.expression.designsurface.userinterface.datapane.datapanelmodel.viewmodel_latesceneupdatephase(object sender, sceneupdatephaseeventargs args)
   @ microsoft.expression.designsurface.viewmodel.sceneupdatephaseeventhandler.invoke(object sender, sceneupdatephaseeventargs args)
   @ microsoft.expression.designsurface.viewmodel.sceneviewmodel.firelatesceneupdatephase(sceneupdatephaseeventargs args)
   @ microsoft.expression.designsurface.pipeline.sceneviewupdatescheduletask.updatelate()
   @ microsoft.expression.utility.scheduler.scheduletask.update()
   @ microsoft.expression.utility.scheduler.schedulingservice.dispatchtasksatpriority(dispatcherpriority priority)
   @ microsoft.expression.utility.scheduler.schedulingservice.dispatchertoken.dispatch(object arg)
   @ system.windows.threading.exceptionwrapper.internalrealcall(delegate callback, object args, int32 numargs)
   @ ms.internal.threading.exceptionfilterhelper.trycatchwhen(object source, delegate method, object args, int32 numargs, delegate catchhandler)
   @ system.windows.threading.dispatcheroperation.invokeimpl()
   @ system.windows.threading.dispatcheroperation.invokeinsecuritycontext(object state)
   @ system.threading.executioncontext.runinternal(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)
   @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)
   @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state)
   @ system.windows.threading.dispatcheroperation.invoke()
   @ system.windows.threading.dispatcher.processqueue()
   @ system.windows.threading.dispatcher.wndprochook(intptr hwnd, int32 msg, intptr wparam, intptr lparam, boolean& handled)
   @ ms.win32.hwndwrapper.wndproc(intptr hwnd, int32 msg, intptr wparam, intptr lparam, boolean& handled)
   @ ms.win32.hwndsubclass.dispatchercallbackoperation(object o)
   @ system.windows.threading.exceptionwrapper.internalrealcall(delegate callback, object args, int32 numargs)
   @ ms.internal.threading.exceptionfilterhelper.trycatchwhen(object source, delegate method, object args, int32 numargs, delegate catchhandler)
   @ system.windows.threading.dispatcher.legacyinvokeimpl(dispatcherpriority priority, timespan timeout, delegate method, object args, int32 numargs)
   @ ms.win32.hwndsubclass.subclasswndproc(intptr hwnd, int32 msg, intptr wparam, intptr lparam)
   @ ms.win32.unsafenativemethods.dispatchmessage(msg& msg)
   @ system.windows.threading.dispatcher.pushframeimpl(dispatcherframe frame)
   @ system.windows.threading.dispatcher.pushframe(dispatcherframe frame)
   @ system.windows.threading.dispatcher.run()
   @ system.windows.application.rundispatcher(object ignore)
   @ system.windows.application.runinternal(window window)
   @ system.windows.application.run(window window)
   @ system.windows.application.run()
   @ microsoft.expression.designhost.isolation.isolationprocess.runapplication()
   @ microsoft.expression.designhost.isolation.isolationprocess.designprocessviewprovider.<>c__displayclass7.<applicationview_activated>b__6()
   @ system.threading.threadhelper.threadstart_context(object state)
   @ system.threading.executioncontext.runinternal(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)
   @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state, boolean preservesyncctx)
   @ system.threading.executioncontext.run(executioncontext executioncontext, contextcallback callback, object state)
   @ system.threading.threadhelper.threadstart()

is editing of generic.xaml suppose work?

---

lh

hi lars,

editing of generic.xaml should work in blend, have few questions:

1. build of windows8 , visual studio using? recommend trying scenario on latest windows8 release preview , visual studio 2012 rc bits.

2. possible share small repro project us?

you can send me details @ navits @ microsoft dot com , can take @ issue on priority.

-navit saxena

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