>What I think (I have no special info about it): VFP5 is for the development VFP environment, VFP5ENU is the equiv for runtime. I have no idea why would there be 2 different files.
Thanks Vlad, your help helped me to solve the problem.
I put vfp5enu.dll in UTNav directory and this solved it. You were right, it seems to be the same functions.