I recently upgraded to FC5 and a program that ran under FC4 has trouble running under FC5. The error message is: [flinn@flinn bin]$ ./CmapTools awk: error while loading shared libraries: libdl.so.2: cannot open shared object file: No such file or directory dirname: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory /bin/ls: error while loading shared libraries: librt.so.1: cannot open shared object file: No such file or directory basename: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory dirname: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory basename: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory grep: error while loading shared libraries: libc.so.6: cannot open shared object file: No such file or directory /home/flinn/IHMC_CmapTools/bin/../jre/bin/java: error while loading shared libraries: libpthread.so.0: cannot open shared object file: No such file or directory The libraries exist as links in /lib. What do I have to do to make these libraries visible to the program? I also tried to install another product and got the same error. Both programs are targeted at Linux. Thanks Don -- Don Flinn President, Flint Security LLC Tel: 781-856-7230 Fax: 781-631-7693 e-mail: flinn@xxxxxxxxxxxx http://flintsecurity.com