Check out Thread #252736 Message #252774

Interestingly, the MSKB article referenced appears to no longer exist. I'm going to start another thread asking Garrett where it is. The gist of it was that, under NT, FPD could spontaneously "drop out" to the OS with no warning or error. This apparently happened most often in looping constructs.

AFAIK 32 bit FOXPROX is preferable to the 16 bit version under NT. I don't know if FPD can effectively use large amounts of RAM (or use it without errors) but you could set up a shortcut and limit it to, say, 16 or 32 MB XMS memory only. Also check FILES= in CONFIG.NT (*not* CONFIG.SYS) to make sure the value is sufficient for your needs.