hi. im new at maxwell 2D and 3D. i found some pdfs and examples. im working on the rotational actuator example which in that pdf 1. and i got an error: Fatal internal error (2:14:49 Eyl 09, 2013) Simulation completed with execution error on server: Local Machine. (2:14:49 Eyl 09, 2013) i dont understand what does it mean and i dont know what im gonna do?