Nevermind, I figured it out.

After further time searching the problem I've found the problem in spite of his ignorance:
Not only the Variable $Content is needed, but also $Form at the same point in code.

Hi - can you let me know where you added the $form code please?

this is where my problem is occuring: http://www.miriamcdwyer.net/Security/login

I have just had this problem happen to me without doing anything, it just started happening, and im not sure where to find how to fix this. Thanks in advance :}