Fatal error: Call to a member function on a non-object in /xxx/xxx/xx/components/com_comprofiler/plugin/user/plug_cbconnector/plugins/plug_phpbb3.php on line 1763
this error occur when i trying to register, if after this error i try to login it's all ok except the forum that not recognize me.
I don't think your table prefix should be causing an error as I read it from the config.php file.
What is on line 1763 of your plug_phpbb3.php file? Have you made any changes to any CB Connector files?
On mine there is not a function call... normally you see this error when you are calling a function within a class that has not been made global yet...