Registration Problems

[g0dfather1984]

It has been brought to my attention that when someone clicks that they agree to the rules, this funny message pops up:

vBulletin Message
You have left a required field blank.

Not allowing new members to register.

How do I fix this?

[Opserty]

Create a New Style with no Parent Style. Test the issue whilst browsing in this style, does the problem persist?