Hello! I've search and found one article about topic, but it concerned to MS Works 4.0. Anyway, MS advise as workaround in this case reinstall your printer driver in W95 or turn off Math coprocessor (ROFL) or use printer emulation compatible with your prunter. HTH Have a happy day Vladimir Shevchenko > In the details section after getting "Illegal Operation", a few users > get this message (RANDOMLY!)running my EXE.