RichardA

Not sure it this helps but my initial flight worked fine and then the following two flights from EGGP would cause the Flight Sim to freeze on take off and I had to reboot the pc. I found that it was due to starting up and then selecting the Cold and Dark panel state. I now load the plane up with its normal state i.e. engines running and then shut everything down so that it is in a Cold and Dark State. I have had no issues since doing this and although your problems are with the flight sim crashing rather that freezing, it may be worth giving this a try..

I had a similar issue with FSINN would work ok with any other aircraft but as soon as I used the 737 ngx it would crash. I installed FSINN on my slave pc and it has worked a treat, online for 3 hours last night without any issues. Now in the process of trying it with IVAP (external). Second pc or laptop is definately the way to go if you can.I have not installed any fixes either, I am using the original download which I purchased before any fixes were available.