Hello all...
This problem is driving me a bit crazy. I've just ensured the following:
1. Autosave is disabled including bSaveOnInteriorExteriorSwitch=0
2. C++ 2008 is up to date.
3. Load order is correct.
4. Latest OBSE is installed.
The game crashes on attempting to enter some interior doors from the world AND from with-in an interior. I have no idea how to fix this, even after two hours of reading up on it.
The error box says, "This application has requested the Runtime to terminate it in an unusual way."
Thanks for your time.
-Art

Can you post your load order?
Can you post your load order? Has this started happening recently? Does this happen with older or a new save game as well? Does deactivating Morroblivion fix the issue?