I am using some of the great functionality of Focus.FLL. It works great on my development machine. When I install my app on some other machines I get an error message "FOCUS.FLL is invalid" when I SET LIBRARY TO. I am also using Foxtools and ComTools with no problems. Only Focus.FLL does not work on some machines. On others it works OK.

Has anyone had a problem with an FLL that would not work on certain machines? If so, were you able to find a fix?

Thank you.