Aaah, ****.
I deleted the program, ran the setup executable again and reinstalled it, but now it gives me error messages when I try to open the program at all. Wtf.
I'm gonna' try and uninstall the program and delete the install folder, redownload it and try again. If that doesn't work, then I'm ****ed.
EDIT: Phew, it worked. I can load Team Builder again now, though I had to empty all my boxes and teams to the Recycle Bin.
I'm gonna try and input the update now, Ulti. Cross your fingers.
EDIT2: YES! RESULTS! Now to revive my teams.
EDIT3: Yeah. Okay, the only one I didn't manage to get working was my OU team with Calderan in it. Probably the program was confused with the insert or whatever. Ah well, I can make it again.