Me registration page doesn't work.

Me registration page doesn't work.
I have activated a button to go to the registration page but I keep getting an error when I click on there.I have CB installed and since then it doesn't work more
who can help me?
I get following error

Warning: array_keys() expects parameter 1 to be array, null given in /home/hengelvri/domains/hengelvrienden.be/public_html/administrator/components/com_comprofiler/plugin.class.php on line 442

Warning: Invalid argument supplied for foreach() in /home/hengelvri/domains/hengelvrienden.be/public_html/administrator/components/com_comprofiler/plugin.class.php on line 442

First post = welcome to the forums.
Telling us more information will help us help you.

• Version of CB?
  if it's not current, please upgrade
• Version of Joomla?
  if it's not current, please upgrade
• Check your SEO/SEF settings
• Disable (one-by-one) any 3rd party extensions
• When you searched this forum , do any of the results help you?

Best-