well thats just buggered up the entire sim Grrrrrrr.....another pic of the error
That clearly indicates the problem doesn't have anything to do with GSX, which is equally affected by your problem with graphic as the rest of the sim.
I asked if you use any shader modification. GSX doesn't change anything in the shaders so, it cannot possibly cause that but, instead, it might affected like any other object by a problem to the sim, usually caused by shader mods that are not entirely compatible with the specific version of the sim.
My suggestion to remove the shaders is exactly what the sim will do at each reinstall, compiling the shaders in the ShadersHLSL folder in the main P3D folder but, if those have been modified by a shader mod, all bets all off if the mod hasn't been fully tested with that specific version of the sim.
To restore all shaders to default, you can remove the ShadersHLSL in the main sim folder and then reinstall it, so the original ones will be restored.