This problem I believe originated after I upgraded recently to Joomla 2.5.3. I am also running CB 1.8.

Fatal error: Cannot access protected property JMail::$cc in /home/techknow/public_html/cms/components/com_hotspots/controllers/hotspot.php on line 245

Now everyhting was working ok before the upgrade to first of all J 2.5.0, then eventually to 2.5.3 - I noted that none of my 500+ members was putting any locations on the map until I was advised by a member of the error. I checked this myself as Admin rights and I am getting the same error. No backend settings in Admin panel have been changed

Any help is appreciated regarding fixing this.