CentOS is basically the "freebie version" of Red Hat. So not too surprising an issue on one would happen on the other. The good news is that I think I'm very close to a fix for this nasty 64-bit OpenGL library issue. I'm doing some test builds and installs now and if it works, then I'll push out new distributions of ECCE tomorrow (Thursday), both binary and source code. So don't worry about any troubleshooting at this point.