I have been working on nonlinear sims and adjusting the load to get the results I was looking for. Had no problems running the simulation or viewing the results. Without changing anything only the nonlinear simulations started giving me the error " Part1-Study 1: Failed ". No other warnings, boxes, or what not. I can run any other simulation without getting this error. Even testing a simple beam gives the error. Also reinstalled the program..... Haven't seen any issues like this searching around. Let me know if you want specifics I will be glad to provide them. Any suggestions?