Sadly the update did not solve the problem on my rig. I have installed P3Dv2.5 (without any tweaks, but with the latest patch), FTX Global, Vector, Rex 4TD, Opus and a few airports (FSDT Geneva and some other payware-airports).
Without GSX: no crashes, I can fly hours and hours without problems. With GSX: CTD sometimes immediately, sometimes after a few minutes, but always. After deinstallation of GSX: no more CTDs.
After installation of GSX I downloaded immediately the latest addon-manager-update (it shows me the P3Dv2.5 fix installed), but the CTDs are back again until deinstallation of GSX. I tried 3 installs and deinstalls.
There must be still a problem with GSX and P3Dv2.5.
Maybe you can have a look into this problem.
Regards,
Hans