Source of CWP crashes ?

I have one large CWP window called Settings with many tabs in its %ps which contains references and controls all variables and features of the code.

That window when i close it or just escape from it by %ac[esc] (even by opening it and not doing anything immediately close it) almost always crashes the whole code. Other smaller windows containing %ps never crash. The code also never crash if i open it in debugger so debugger keeps mum about source of the problem while the bug was not possible to find for years.

I use SAVE statement as Paul suggested few years back which at some point helped against the crashes but alas, not anymore. I checked all undefined variables - everything is clean. If i make the code compatible with XP serv.pack3 as Paul also suggested, then i get approximately 3-4 times opening/closing OK and then again with 100% probability the code crashes. Any new suggestions how to catch the super roach ?

If you have enough memory, try putting /SAVE on the FTN95 command line to see if this 'fixes' the problem. This is not a real fix but it will tell you if you have missed some unSAVEd variables somewhere in your code.

Paul, that compilation switch is already there as you most probably also suggested that before. To make the experiment pure and clean I inserted /save for all other files but, alas, damn roach survived pesticiding.