A very similar series of problems here, and this whole Couatl/Bglmanx crap is going on my nerves. Spent a smaller fortune on this software yet all it gives is grief - no surprise PMDG is so much against it.
Have you tried with a non-PMDG airplane ? Maybe PMDG is "against" it, just because there some kind of conflict with their software. Not that I ever found it, since I have some PMDG products (unfortunately I only have the 777 in FSX and the 747 in P3D4), but I wasn't able to see any problems on my systems when I tried it.
I have never seen such an unstable piece of software ever, totally ruining a sim session.
GSX is of course very stable. If it's not on your system, then we'll find out why, and as usual it will turn out it was something else causing it because, unfortunately, when the real cause is found, users that initially assumed "it was GSX", don't bother checking the end of the resolution.
For example, in your log it shows a Couatl.exe crash, but that doesn't automatically mean Couatl has MADE the sim crash. As explained so many times on the forum, Couatl CANNOT CRASH THE SIM, this is really something not questionable, and everybody saying otherwise is clearly misinformed about how Windows works, since Couatl being external .EXE simply CANNOT crash the sim, since it doesn't have any access to its memory space, and that's really out of the question.
What CAN happen, instead, if the sim crashing ITSELF, for OTHER reasons, and MAKING Couatl crash so, in the log you see a crash in Couatl.exe, so you are mislead thinking Couatl is the cause, when in fact it was the victim.
Yes, if the sim crashes itself for OTHER reason, Couatl might likely report a crash in the Event Viewer, because when the sim was terminated abruptly, Couatl couldn't receive the standard command from Simconnect the sim is going to quit soon, so it couldn't make its own cleanup of data, so you end up with a crash logged, but at that time the sim *already* crashed for other reasons, it wasn't Couatl that made it crash, it crashed and made Couatl crashing with it.
So, the real solution would first find why the sim crashed in the first place so, once you find it, the Couatl error in the event log will surely go away, since when the sim exits correctly, Couatl can close itself cleanly as well.
So, let's start again, and don't assume the problem is GSX so, the first test is:
- Is GSX working with a default airplane on a default airport ?