Compilation Problem

Hey Guys,

I have a 2000 Lines code I wrote, if I try to compile it's working no error message but when I try to launch it via the EXE it popup and then close!?

If I compile it with the debug on, it's working perfectly.

Where should I start looking ?

I got it, I opened back all my backup to compare them

At a certain point I've been doing this: While Not KeyHit(999)
And it was the problem... :)