Registration error message re plugin.class.php

When clicking Register on my site's home page, I get this message: "Warning: array_keys() expects parameter 1 to be array, null given in /home/moperfec/public_html/tryontowers/administrator/components/com_comprofiler/plugin.class.php on line 442

Warning: Invalid argument supplied for foreach() in /home/moperfec/public_html/tryontowers/administrator/components/com_comprofiler/plugin.class.php on line 442".

Joomla 2.5.8, CB 1.9

Line 442 contains: "foreach ( array_keys( $this->_pluginGroups ) as $pluginId ) {".

I have Joomla User Manager Option "Allow User Registration" set to No and Community Builder User Manager Option "Allow User Registration" set to Yes, per the tutorial.

What is my problem?

-bc

I have exactly the same problem! And nothing is to be found on the internet about this. Very, very strange ...

I got array errors when CB login/register is started in mod_menu\default_component.php of the used template.

In use: Joomla 3.1 / CB 1.9.1

Please answer asap/ Big issue for me (and for topic starter, I assume) ...