I have seen the memory error occur on my page frames when I accidentally caused a recursive loop in the refresh events. I had a page frame with several pages and a refresh method of a button on the page frame called the refresh method of the page. This caused a rather nasty loop unil the program errored out. You might want to use the debugger to trace your code and see what is firing before you get the error.

This is not case: firstly it only happens on some computers, and secondly I can trace the code: it does not contain recursive calls, just the first time the activate code is called it will generate an error at some point.

Auke Zijlstra