visual studio

Instructions here on adding Firefox symbols to Visual Studio so I can debug the crashes I'm seeing in Firefox. I'm not running a checked build (not sure where to get those).

The latest crash backtrace is:

nsTextFrame::ClearTextRun(void)

> xul.dll!UnhookTextRunFromFrames(gfxTextRun * aTextRun=0x0d37c310) Line 325 C++
xul.dll!FrameTextRunCache::NotifyExpired(gfxTextRun * aTextRun=0x0d37c310) Line 373 C++
xul.dll!nsExpirationTracker<gfxTextRun,3>::AgeOneGeneration() Line 211 C++
xul.dll!nsExpirationTracker<gfxTextRun,3>::TimerCallback(nsITimer * aTimer=0x02e3e8b0, void * aThis=0x037c2d60) Line 301 C++
xul.dll!nsTimerImpl::Fire() Line 400 + 0x7 bytes C++
xul.dll!nsTimerEvent::Run() Line 492 C++
xul.dll!nsThread::ProcessNextEvent(int mayWait=1, int * result=0x0020f820) Line 511 C++
xul.dll!nsBaseAppShell::Run() Line 169 C++
xul.dll!nsAppStartup::Run() Line 182 C++
xul.dll!XRE_main(int argc=, char * * argv=, const nsXREAppData * aAppData=) Line 3174 C++
mozcrt19.dll!arena_malloc_small(arena_s * arena=0x00020040, unsigned int size=0, int zero=0) Line 3654 C
mozcrt19.dll!arena_malloc(arena_s * arena=0x00000000, unsigned int size=0, int zero=0) Line 3713 + 0x7 bytes C
mozcrt19.dll!malloc(unsigned int size=8491528) Line 5750 + 0x27 bytes C
xul.dll!nsLocalFile::Release() Line 753 + 0x13 bytes C++
xul.dll!nsRefPtr<nsIDOMEventListener>::~nsRefPtr<nsIDOMEventListener>() Line 957 C++
xul.dll!XRE_CreateAppData(nsILocalFile * aINIFile=0x00000001, nsXREAppData * * aAppData=0x008240a0) Line 139 C++
firefox.exe!wmain(int argc=1, wchar_t * * argv=0x00836080) Line 87 + 0xe6 bytes C++
firefox.exe!__tmainCRTStartup() Line 591 + 0x19 bytes C
kernel32.dll!77614911()
[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
ntdll.dll!77a4e4b6()
ntdll.dll!77a4e489()