AFAIK, my program free's all data it uses. If that was the problem, i probably would get it EVERY time i ran the app, and it would show me a good usefull source-line, where the AV occured, I think. :?

I have downloaded FastMM, but i dont know how to use it to diagnose this problem.

Can someone provide me with a list of things i have to do, to find the source of this AV?

Thanx alot!