Database Query Error At Signup

No one can sign up. After clicking the "Join Now" button, there is a "Database Query Error". The only thing I changed recently was I added a field in the profile fields builder. They are multiple selctor check boxes. Any ideas?

Need to see the database error to tell you what to fix or remove or add .....   you should have gotten an email with the error in it.

I did not receive an error email. I did also check the error log file and there is nothing there. On a very sad related note, I went to look at the profile builder to see if the last field I added could be the cause and the profile builder will not load.

Provide us with full db error