All, I have an HP Compaq running Windows XP, under which, I have installed DJGPP, which compiles and runs basic C programs in a DOS [C:\] window. I really like the GRX library, which I downloaded and created the proper sub-directories using the UNZIP32 utility. But when I run MAKE under the sub-directory -> C:\DJGPP\contrib\grx246\src> [ make -f makefile.dj2 ] I receive the following ERRORS: (and no LIBs are created) In file included from fdrivers/pblitr2r.c:44: ./fdrivers/pblit_nb.h: In function '_GrFrDrvPackedBitBltR2R': ./fdrivers/pblit_nb.h:100: error: invalid lvalue in assignment . " . " make.exe: *** [fdrivers/pblitr2r.o] Error 1 Can you help me, or suggest a fix, or a reference, so that I can get past this MAKE Error and run GRX 2.4.6 ? Thanks, Paul Paul W. Craig Applications Engineer Octagon Systems Inc 303-412-2007