You posted an error log from June. Do you have logging enabled in GSX ? If yes, the log would then appear in the Couatl.LOG file instead, in the same folder. If you don't have logging enabled in GSX, go into GSX Settings -> Troubleshooting and enable the log.
Then, restart Couatl from the menu, try to reproduce that error, exit the sim and post the Couatl.LOG file instead.