27 minutes ago, FoxToGo said:

So what can I do to fix it? I have no other AI installed.

 

On 12/11/2019 at 5:36 PM, FoxToGo said:

I only know how to fly a 737, so I want some livires on it as well. I got a 151 livery pack from the internet. When I deleted it then did the test, it worked completly fine.

What about all of the texture repaints you made for the 737?  The only thing you can do in this instance is to remove the repaints because one, if not all, are not compatible with FSX.  You state that when you deleted the liveries, "it worked completly [sic] fine."

I did remove the repaints, and I still have the problem. Now the problem is there even when I try to change the time and date.

I figured out the problem, I just had SP1, so I installed SP2, from the offical Microsoft Website an then it worked.

32 minutes ago, FoxToGo said:

I figured out the problem, I just had SP1, so I installed SP2, from the offical Microsoft Website an then it worked.

If you had provided us with an AppCrashView report, we could have solved this sooner.  Glad you found the fix.

Sorry for wasting so much time. Thank You!