Hi, Oddly enough, I get an unrecognized binary format if I run gdb on a C++ program that I compiled. I get the same results if I run ldd on the program. However, I can run the program just fine. Any ideas why I would get unknown binary type errors from gdb and ldd? Thanks, -Ossama ______________________________________________________________________ Ossama Othman <othman@astrosun.tn.cornell.edu>