I have been using the VFPENCRYPTION71.FLL for some time and it has worked flawlessly on hundreds of PCs all over the US. Suddenly I get one PC that I can't get it to work on. I get the error "file VFPENCRYPTION71.FLL is invalid" I have tried both VFPENCRYPTION71.FLL and VFPENCRYPTION.FLL and get the same error. Normally I have been shipping VFPENCRYPTION71.FLL as most PCs have the msvcr71.dll installed. I tried changing my code to load VFPENCRYPTION.FLL and tried copying msvcr80.dll to several places and no change. Any Ideas? I'm not real sure but I think the PC is a home brew but I do know it is running Windows XP Home Service Pack 3. I have Service Pack 3 on an XP Dell here and have no problems. What on this PC could be giving me fits?