When I try to exit the damn thing properly it purposely crashes for no reason, giving me "This program has experienced a error and needs to exit" sort of thing, it happens again even after I exit!

I want to know whats the issue because I tried regular uncompressed AVI files and those dont change a thing.
Here are my system specs:
E6400
9600GT
2 GB Ram
80GB+160GB HDs
Gigabyte P35 Motherboard
Windows Vista Ultimate
It should be more then capable of running it fine, the good thing is I get fast renders but even then when that happens it crashes.
Any idea on what could be causing all these issues?
I'd really like to get through one session without a crash but that doesn't seem possible.
