Yeah... you're going to need a clean install of Orbiter. There is way too much stuff going on right there to unpack.
Take a gander at something called the Jonesoft Mod Enabler tool. It's a very small program that goes in your Orbiter directory. When you first run it, it creates a folder (defaults to Mods) that you can stick all your addons into (unzipped, maintaining the directory structure).
From here (running the mod enabler) you select which mods/addons you want. It will migrate it over for you. Run Orbiter like normal, and the addon should be there for you.
When you are done, you can remove it (with a simple mouse click). If you find something that "breaks" your Orbiter installation, just remove it and delete the offending addon.
The Orbiter.log shows remnants of UCGO:
D3D9: ERROR: Base Object 0x34481B8 = 'Equator Base' not cataloged
D3D9: ERROR: Base Object 0x342BC00 = 'Southern Base' not cataloged
D3D9: ERROR: Base Object 0x341BAA0 = 'UCGO Base Europa' not cataloged
That could be a clue to the CTDs.
I agree with Phantom Cruiser that a clean re-install of Orbiter will be easier than hunting down any possible cause for that.
Also the use of the Jones Soft Mod-Enabler is very much recommended for the future.