fsx.exe-application error

For no explainable reason, this problem just developed tonight as I was playing the game. On two occasions while playing the game, the program all of a sudden stops and the followed notice appeared:
Microsoft Flight Simulator x: fsx.exe - application error.
The instruction at "0x200e5b92" referenced memory at "0x00000004". The memory could not be "read"
Click OK to terminate program.
Anyone got any idea why this is happening?
Bubblehead
Microsoft Flight Simulator x: fsx.exe - application error.
The instruction at "0x200e5b92" referenced memory at "0x00000004". The memory could not be "read"
Click OK to terminate program.
Anyone got any idea why this is happening?
Bubblehead