Are you any good at editing your registry?I wish I would have known that first.Guys, I am in the lobby, and do this to install the new patch...
DEACTIVATE the game first, then install the patch. That is what I did, and I had no problems installing the patch.
If this is the fix, thank the guys in the lobby!
Any suggestions on what to do now?
OR...
Uninstall the game, re-install it, and apply the 1.5 patch. You no longer have to worry about activating it online to play it anymore so that is a good enough solution.
Don't delete your mods directory, and make a backup of your Keyboard file among other bit concerning your campaign saves, and you should be good to go.