XF 1.4 Big issue

[=MGN=RedEagle]

I just upgraded from 1.3 to 1.4.3 I seem to get this error when registering and account who's name is already taken:

Please correct the following errors:

1. Some fields contained unexpected data. Please try again or contact the administrator.
2. Please enter a name that is at least 3 characters long.
3. Please enter a valid email.
4. Please select a valid time zone.
5. Please enter a valid password.
6. Please enter a value for all required fields.

Is this normal

 

[=MGN=RedEagle]

Fixed this

 

[Baal]

Fixed this

How did you fix this? I have the same issue and I can not figure it out.

 

[Paul B]

It is either due to an add-on or an outdated template (or both).