I am getting error:
Fatal error: Tracker::get_recently_viewed() [tracker.get-recently-viewed]: The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition “BreadCrumbStack” of the object you are trying to operate on was loaded before unserialize() gets called or provide a __autoload() function to load the class definition in /modules/Trackers/Tracker.php on line 112
I checked it up on Google, the only resolution I found was here: http://www.sugarcrm.com/forums/showthread.php?t=72109
I cross checked both the errors listed therein -
The session directory being set in apache/php was not correct, which had to be changed in php.ini with the variable session.save_path
The session.auto_start in php.ini needed to be set to OFF
In my situation, both the above errors are not present. The seesion.save_path is configured correctly & also the auto_start is in OFF mode.