On the last three flights with the Piper cherokee my flight has been interrupted by this accusim error message:
Accusim2.lua: attempt to perform arithmetic on field `?´ (a nil value)
After receiving that error message, the flight simulator screen turns black but i can still hear the ATC and the engine, and after clicking on the accept button of the error message the simulator keeps playing, but the plane appears dead and starts falling from the sky like a stone. I can´t restart the engine by any means, but it still keeps sounding as it was on. From this point on, i can only end the flight before the plane hits the ground. The error appeared after 40, 60 and 70 minutes on flight more or less on the three failed flights i´ve had.
I´ve flown five flights with this plane since i purchased it, the first two going without any fuss and being pretty long flights (two hours and forty minutes the first and nearly four hours the second), but after those two i´ve been unable to complete any flight in this lovely plane
, so hopping i can get a solution here. Thanks in advance 
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