>I am getting an error: Library file foxcrypto.fll is invalid (Error 1691) on one machine using foxcrypto.fll. Are there any other required support files needed for this to run. I can copy the file from a machine that works, and it won't work on this one machine.

The foxcrypto.fll has dependency on MSVCP60.DLL and MSVCRT.DLL. I would compare those DLLs versions with PC where it works.