Linux/ModelSim: can't access Tools > Edit preferences

It's set to '.:.', ie. nothing, but why would that be relevant? The error message clearly shows that the software already has the full path to the library. It claims that there is no library at that location, but the required library is clearly at that exact location. Besides, the ModelSim installation has no settings script (that I can find) that sets up anything, let alone LD_LIBRARY_PATH. And I can't imagine that a tool vendor would ask you to set LD_LIBRARY_PATH - that's just a hack.

Some searching shows that this is likely to be a 32/64-bit problem. I also have experience of trying to get ModelSim PE, which is 32-bit, running on an RH7 64-bit system for an evaluation. It's difficult, and I gave up, even after a lot of input from the FAE.

The problem is that no-one at ModelSim, or Intel, or possibly anywhere else, has started witha 64-bit version of a supported system, and then tried downgrading it enough to run 32-bit ModelSim with no problems at all. My Centos 6.2 system has the 32-bit compatibility libraries installed, but that is clearly not sufficient. And no-one in their right mind is going to install an obsolete 32-bit system from scratch just to run ModelSim.