Try to download and install Microsoft Visual C++ 2005 SP1 Redistributable Package (x86) on the PC.

>i use vfpcompression.fll in my applications.it works perfect but in some windows (XP SP1 or SP2) when i call
>Set Library to vfpcompression.fll
>i got error : Library file d:\program files\binyaz programs\bsmsm\vfpcompression.fll is invalid.
>I also copy the needed files (msvcm80.dll,msvcp80.dll,msvcr80.dll,Microsoft.VC80.CRT.manifest) in my application setup.