Actually, Gruntboy is the
IWD-Know-It-All.

At any rate, here's what I found:
- Black Isle's advice on handling assertion error 1763 (UK version only)
- You can check here for Black Isle's info on assertion errors.
- You might need to update Direct X on your computer - check here and follow the links.
- Sometimes clearing the cache helps when the game crashes on area transitions.
- If all else fails, post in the Icewind Dale: Heart of Winter Troubleshooting
forum - there's usually someone there who can help you out.