Jake...
Whenever you get the Microsoft error report window pop up, click on the link at the bottom of the window first, to find out what the error was...!
In my case, when the fault occurs it's generally because I have switched to an older FS 2000/2002 aeroplane, and the error is reported as "Panel.dll"....
(I get LOTS of "Panel.dll" and "Weather.dll" errors popping up)...!!
...and sometimes the program just gets confused if I rapidly switch between planes...

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I seem to get more errors in FS 2004 than ever I did in FS 2002..

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Never mind, they are all sent to try us...

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Cheers...!
Paul...

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Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.