Out of stock -Bltbit prob

Hi there - I was useing bltbit in my project that just make a ball (picture) move around in another picture - After a while its giving me the old Out of stock place problem - i think its have something to do with Bltbit - Can someone help ?

[Mad Compie]

I believe it's Out of stack space instead of "Out of stock place".
Probably you perform a continously paint loop, using BitBlt in the Paint event or something.