@proxos666 @EA_Kipling This has given me so much stress trying to fix, and it feels like I've wasted so much time on it as well. Your suggestion worked in so far as I stopped getting the c7 error, the game started to load.. though for some reason, it was loading in complete fullscreen (not windowed fullscreen) and then the game closed after about a minute, and it had my resolution STUCK at some absurdly low setting which made me only see a tiny section of my screen.
I couldn't find a way to fix this windows resolution error caused by SWTOR, as windows 10 doesn't seem to have a setting for changing resolutions anymore, just changing to let you zoom IN and make everything larger, or go back to 100%, and the current 100% had everything too large already. (Imagine what it looks like when your video card drivers are uninstalled).
I thought uninstalling and reinstalling my drivers for video card might actually fix things, and uninstalling DID fix my resolution. However, reinstalling my drivers changed my resolution back to that unworkable size. I only saw one solution then to fixing my resolution errors, and that was to return to windows 7. I thought a system restore might work, but I've never done that in windows 10, and I didn't want to compound any issues. So, I went to bed and reverted to windows 7, though now I'm back to c7 again with a busted updater. >.> I'm worried that if I want to play again, I'll need to 1) update my windows to 10 again and 2) find a way to have the game only open in windowed or windowed fullscreen mode, because I think I caught the 800x600 resolution windows 10 swtor bug.