XF 1.2 Changed Forum Directory, Now Login Errors

Hi guys,

I recently changed my Xenforo directory to a new sub-domain. After the switch, I can access the forums, but after typing in my username and password to login and hitting enter, I'm greeted with an error:
Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator and inform them of the time the error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.
The URL is also "community.(mywebsite).com/login/login"
Are there supposed to be two logins in that URL?

Anyways, any help would be great! Got a lot of users waiting on me to fix this. Thanks!

EDIT: All add-ons are currently disabled. There are also no server errors in the xenforo admin log.