>Hi,
>
>Some of my users are having this error "I/O operation failure". All the users have the same copy of the exe file but only a few experience this problem.
>
>Any help will be appreciated.
>
>Robert

What I've done is to hack the EXE file and look for references to other drive letters (D: or E:, upper or lower case). I usually find that there's a path associated with them. I change the D: or E: reference to C: and save the modified executable file. This always fixes it for us. It happens because the paths for various files in a project are saved into the EXE file and if you developed the app on any drive other than C: you get the errors. I always used to develop on an E: drive and when a user tried my program it complained if no disk was in his CD drive (E:). I modified the EXE file to refer to a C: drive because the only guarantee you have is that everyone has a C: drive. The problem disappeared.