So I understand that there were the key programs that affected Couatl.exe. I closed those down, and P3D worked fine until randomly it Crashed to Desktop, which I've never seen before. Now I understand what other P3D users are saying about CTD, and why they uninstalled Couatl.
Your error report only shows that Couatl has crashed, not that Couatl CAUSED P3D to crash.
In fact, it's exactly the opposite, your P3D crashed, and IT caused Couatl to crash. As explained many times already on the forum, Couatl.exe CANNOT CRASH THE SIM.
It might crash on its own, sure, but the worse it can happen, is that will disappear from the Addons menu bar, since there's no way for an external .exe loaded from the EXE.XML file to crash the sim.
The Couatl.exe crash is the result of your P3D CTD, not the cause.
The most likely reason for P3D crashing at KLAX when using the PMDG, it's likely always the same: memory exhaustion caused by:
- Too high settings
- Too many addons loaded at the same time
Now that PMDG is available under P3D, will likely result in many similar reports, because one of the most memory hungry airplanes out there (1st place goes to the 777) can be used now so, if P3D 2.5 + KLAX ran fine before, but there wasn't as much free VAS as in FSX ( P3D takes MORE VAS than FSX ), if you add the PMDG, you are going to risk more crashes.
Now I understand what other P3D users are saying about CTD, and why they uninstalled Couatl.
No you don't, and neither them. If you or anybody else has uninstalled Couatl, and are mislead thinking you "solved" this issue, just because the sim doesn't crash anymore, that's doesn't mean the program was the cause, but that's not the case.
If the problem was memory exhaustion, if you "uninstall Couatl", you'll also LOSE THE SCENERY so, removing a large scenery like KLAX would obviously SAVE MEMORY, that's why you or anybody else would be easily mislead into thinking the cause of the crash was Couatl, but the crash stopped only because, by removing the scenery (it won't load without Couatl, of course), you saved quite a bit of VAS memory.
A very easy test would be:
Does P3D crashes too, with a DEFAULT AIRPLANE ?