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...