HH772. If you do the repair and reinstall of SP1 and SP2 make sure that you first boot up FSX, let it load, then exit and do a complete PC restart. Then so SP1, start up FSX, let it load, then exit then do a complete PC restart and then the same again for SP2. It seems to be the case that this fixes the file changes properly. Then load or install your Captain Sim models and see what happens.

I have started another thread re FSX and fixes in General Discussion. I am about to update this in detail (in a day or two) for those interested.

In short after a complete fresh install of FSX I have no uiautomation.dll files running. I only let trusted software like Capt Sim do a an installation to FSX and all others I install to an FSX TEMP directory outside of FSX to see what is being installed. Then I install these aircraft manually.

I have made miminal changes to the FSX cfg and only made two minor tweaks.

I no longer run FSUIPC.

I no longer use addin or addon scripted programs to put stuff into FSX

I now have all addon scenery placed into a special Scenery folder outside of FSX and use the FSX scenery library tools to find them. I now layer the scenery  properly (more to come on this). I do this manually and via a quite specific order after weeks and weeks of research on the scenery design forums and some real gurus on the subject of getting FSX to run properly. It is more complex than we think.

Oh and I have a variety of setting configs saved in FSX to change the settings of the graphics etc via FSX dependent on the scenery I am using and where I am flying and what I am flying.

In short you may wish to consider a fresh install of FSX then put the Captain Sim models in then consider other addons and changes dependent on  how you rig runs in stock standard MS form. FSX actually does a reasonable job of managing all this despite what the naysayers tell you and is actually quite powerful once you get used to its quirks and way of doing things.

Anyway only a suggestion. Look for the simplest solution first. Follow the KISS principle (KEEP IT SIMPLE STUPID).