At the risk of sounding silly (but not intending to): have you RStyled the code?
I think you have some odd memory related problem that only presents itself on certain DOS setups. Have you determined that the point of failure is in the same routine on each PC? If so, and you can't trace to it, you may need to insert numerous OUTPUT Logfile.TXT APPEND; WRITE 'I''m here'; OUT SCREEN lines into the program to figure out _where_ you are bombing out. -- Larry
