Reset Password, Now I can't change it

invalid@example.com (payment proof), payment proof
Wed, 11 Jul 2012 12:27:59 +0000

I reset my password and had it emailed to me.

I go into the area to change my password.

I enter the password that was emailed to me and my new password.

The forum keeps telling me:

The following error occurred:

Your existing password is not correct.