SITL works on one pc but not the other

Hi, I have tried to transfer a sitl simulation from one pc to the other and have run into quite some trouble. The vehicle, on the new system, flies very differently than on the original and is uncontrollable.

I have configured and tuned a sitl vehicle on one computer using xplane and mission planner. I want to run this simulation on a different pc so I transfer the arduplane executable as well as the .param file i have been using and load them both up in xplane. The xplane installation is also nearly identical so I am unsure of the issues. Would be more than happy to provide more information if needed. Thanks!