I hope that this is what you need:
Include From Help/System Information:
Joomla! 1.5.12 Stable, native
PHP 5.2.6 ,
database 5.0.67-userstats-log
browser versions, Firefox
whether you use SEF and which one, ??? Unknown
error messages, screenshots and extensions that change Joomla's core API (hacks or user level). none
Does it work with a default template? I tried it with beez and it still did the same thing.
Have you updated or migrated your Joomla and CB installation? New Installation of both by a real newbie to both.
Debby P