Hi Uri,

>I wrote an .fll that copies an area on the screen to a .BMP file.
>On several computers I reseive an error message
>"Library "c:\triwin\printscr.fll" is invalid.". On every computer
>in my office there's no problem. I saw in the debugger that it happens during 'SET LIBRARY TO "PRINTSCR.FLL"' command.

Something like this does happen when there's no MSVCRT.DLL or the wrong version of it on a computer.

Christof