My bad.
Change this in the template edit:
Code:
<div><label for="cb_rules_agree"><input type="checkbox" name="agree" id="cb_rules_agree" value="1" /><strong><phrase 1="$vboptions[bbtitle]">$vbphrase[read_agree_abide_by_rules]</phrase></strong></label></div>
to this:
Code:
<div><label for="cb_rules_agree"><input type="checkbox" name="agreebypass" id="cb_rules_agree" value="1" /><strong><phrase 1="$vboptions[bbtitle]">$vbphrase[read_agree_abide_by_rules]</phrase></strong></label></div>