Over the last few weeks I have been feeling a little worried about my sim.
It all started when I installed a Grumman AA-1 and when I selected it from the aircraft menu, I got a message saying something like 'some elements of this aircraft are not compatbale with fs2004, would you like to disable them' ... I clicked 'yes' and proceeded to click 'fly' to start my flight but it wont get to 100% loading of the flight before freezing up and giving me an error message saying FS9 has needed to close.
I removed the aircraft and all it's files but for a few more flight attempts after this, my loading bar got about half way then the Blue Screen of Death came up several times.
I defragged my harddrive and everything worked fine for about 2 weeks. Then, I left my sim alone for about 5 days and the other day I loaded up and I got the B.S.D again while loading my default flight (ZK-CIT parked up at Timaru, real time, real weather static). I changed my default flight to the original Seattle default flight included with FS2004 and I managed to make flights both today and yesterday fine...
Then this evening, while on loading a flight at Timaru, my whole computer froze at 55%. I restarted, defragged and everything was fine and I did a good few circuits, landed and turned off the sim. I was loading up just now for a flight in the Harvard, but when I hit the 'Fly' button on the main select a flight screen, my computer froze and I had to restart.
I have not added much new addons in this time- only Mike Stones F111, and Jenks RNZAF paints for the FSDS3 HS.780, so I am really confused as to why this is happening. When the sim does run, it runs fine, no difference in performance or anything. Can anyone help me out please?

