I thought I had tried every Captain Sim FSX addon aircraft in P3Dv2 without any major problems. I did have similar problems with most of them, but I think it was just sounds, not something that caused P3D v2 to become corrupt. I will test it out and see what happens.

I found that fix, and downloaded it, back in December last year. But I don't remember ever having to use it. Maybe it's only needed if you use FlightSim Estonia's Migration Tool. Because I have FSX installed, I copied the CS aircraft from FSX to P3Dv2 and manually added the entries into the DLL.xml file. Maybe the problem only occurs is FSX is not installed on your computer, and I see you had a "dummy FSX" and not FSX itself on your computer. There was a problem with the CS777 for P3Dv2 that people had if FSX wasn't installed, but that was sorted out, so maybe that's was caused by a similar issue.