C++ – Intellisense auto-complete is causing VC++ in Visual Studio 2005 SP1 to crash

UPDATE1: I have reinstalled Visual Studio and I am still having this problem. My guess is there is a problem with my environment.

Update2: Diving in.
I attached windbg to devenv and set a breakpoint in windbg for msenv!_tailMerge_WINMM_dll and traced through.

This is trying to load winmm.dll using the LoadLibrary API. I can see that LoadLibrary is failing and GetLastError is returning 5 which is "access denied".

now, why would vs be denied access to winmm.dll?

—Begin Original—

I am currently having a serious issue with Visual Studio 2005 SP1 Intellisense in C++. I have an all native solution with on project. Whenever I, or the editor, attempt to invoke intellisense auto-complete pow, Visual Studio crashes. I even tried this with a brand new console app. Ctrl + Space in the empty main and Visual Studio crashes.

I googled for help on this but to no avail. I have tried deleting the ncb file but no luck on that front either.

I am currently working with Intellisense turned off as shown in this article:
Visual Studio 2005 – 'Updating IntelliSense' hang-up

And I have no crashes, but it sure would be nice to have intellisense back

Call stack from a crash dump.

7c812a6b kernel32!RaiseException+0x53
502717a6 msenv!__delayLoadHelper2+0x139
50675186 msenv!_tailMerge_WINMM_dll+0xd
505ac3c3 msenv!CTextViewIntellisenseHost::UpdateCompletionStatus+0x1a7
505acb50 msenv!CEditView::UpdateCompletionStatus+0x30
505dcfad msenv!CEditView::CViewInterfaceWrapper::UpdateCompletionStatus+0x2a
02ae47fc vcpkg!CCompletionList::DoCompletion+0x444
02ade2ce vcpkg!CAutoComplete::PostProcess+0x240
02ade07f vcpkg!CAutoComplete::OnACParseDone+0x3e
02adac2d vcpkg!CMemberListWorkItem::OnCompleted+0x9d
029eb4e3 vcpkg!CWorkItem::ProcessPendingWorkItemCompletedCalls+0x117
029f8b4f vcpkg!CParserManager::OnIdle+0x183
0299961a vcpkg!CVCPackage::OnIdle+0x48
5014b288 msenv!ATL::CComAggObject<CTextBuffer>::QueryInterface+0x43
5a9d2394 VCProject!ATL::CComPtr<IOleInPlaceFrame>::~CComPtr<IOleInPlaceFrame>+0x24
5a9d2880 VCProject!ATL::CComObject<CVCArchy>::Release+0x10
774fd420 ole32!CRetailMalloc_GetSize+0x21
5009422b msenv!CMsoCMHandler::FContinueIdle+0x23
5009422b msenv!CMsoCMHandler::FContinueIdle+0x23