Ok. Had a chat earlier with Joomla! core team dev leader.

This problem is due to an API incompatibility introduced by Joomla! 1.0.5, which will be fixed in Joomla! 1.0.6, due out quickly (intended in the next 2 weeks).

If you need to run CB RC2 on Joomla! 1.0.5, you can do following instead of replacing the database.php file:

in components/com_comprofiler/comprofiler.php, search for 2 occurences of
[code:1]
$rowExtras = new stdClass();
[/code:1]
and replace them with:
[code:1]
$rowExtras = new mosDBTable('#__comprofiler', 'id', $database);
[/code:1]

also do same in administrator/components/com_comprofiler/admin.comprofiler.php (1 occurence)

This should normally solve your problem. Please test and confirm by replying here (I didn't check it on 1.0.5 yet, only on an older version).

kovox wrote:

I can't seem to find the code $rowExtras = new stdClass(); to replace in the .php file, I checked twice. Anyone find it? Am I looking at the wrong file or something?

Search for this works fine here. In RC2:

comprofiler.php

line 512
line 757

admin.comprofiler.php

line 1033.