Me again, I thought we had resolved this problem, we have not. We cant pin down what is causing the render issues. We remove things from the file, problem sometimes goes, sometimes changes. I think it is memory related, although when it crashes on launch we dont see a memory spike. Just an 'end process' in Backburner Log. The memory spike to crahs issue is strange, the CPU usage drops to 2%, the RAM usage takes about 5 mins to max out then CTD.