BREVE without graphics, in hopes of using Condor

I have code that works fine when running from a shell prompt, but when I add the option -x to cut the graphical output I get the following error:

Could not open OSMesa extension, offscreen rendering disabled (./bin/osmesaloader.o: cannot open shared object file: No such file or directory)

Despite getting this error, I actually think the code may be working, but that I simply don't understand how the command line version works. I say this because my code is still generating some of the file output I expect it to generate, but not all of it. It seems to be executing a few iterations worth of code and then stopping.

By the way, the main reason I'm using the non-graphical version is that I plan to eventually submit my code to a Condor queuing system so that I can make use of extra CPU power. I'm not even sure I'll be able to successfully do this, but if anyone out there has used Condor in conjunction with BREVE I would appreciate any advice, lessons learned, and perhaps a generic template for the submission script to get it all started.

Thanks
-Jacob