I see nothing wrong with that save, played through a few turns, and no issues. Your issue sounds like an LSystem bug. Once we finally straightened out all the main art bugs in 0.9.6 and released 0.9.6c there were a couple more issues with the art in the full release, specifically there was an LSystem bug that was corrected in the most recent update. That's why there are versions 0.9.6c+, and the current 0.9.6c*. Anyway, reinstall the current release, as I think you have an older version, or patched with the wrong version (there was a patch available up until recently, one for the Enhanced Graphics, and one for the standard Full, if you installed the wrong patch, ie installed an enhanced grpahics patch on a standard full install it would cause this crash, specifically with the behavior you describe). If the issue persists, let me know if you are using the enhanced graphics add on, as I suppose there may be an LSystem bug in there, and I'd like to know if there is, but my money is on the fact you're not updated to 0.9.6c* or installed an incorrect patch, eitherway reinstalling with the currently available 0.9.6c* build will fix your problem.