Hi, Unfortunatley I can't give you any idea how this happened, or a recreation path, but a couple of times I've had PICED 'forget' source code. Also the my recollection of the details are sketchy. I will pay more attention next time, but I thought it was worth rasing as a problem definately occurred and the impact is significant. In both, cases I was editing, then compiled and I got errors I wasn't expecting, indicating PICED couldn't see source that was there. Then I would view the module and the source would be incomplete. I would change the window by scrolling and the contents would change again. Again, I can't give more detail. The first time it happened I remember I had copied code out of PICED (Ctrl-C) into an external file as I wanted to try different logic. Maybe it was use of CTRL-C, CTRL-V. Brad.