>>Maybe some DLLs are not installed on that machine?
>>Maybe if you run Dependency Walker on that machine you will see what.
>
>
>XFRX is in one folder on the server. It never needed any DLL installations. You dump it on server and it works.
>Only dll used by xfrx AFAIK is zlib.dll
>
>What is confusing is why it crushes only on that machine not on any other ?? And only in case of using PNG.
>If I switch bitmap back to bmp, it wld work.
>
>Type of bitmap (file on disc) is only thing that I changed, nothing else.
>
>Thank You anyway :)

The only two DLLs XFRX used directly are ZLIB.DLL and HNDLIB.DLL.
BUT the version of VS it is compiled may need more (like msvcrXX.DLL, msvcpXX.DLL etc).