Disabling PHP Session Auto Start
Jamroom utilizes custom PHP Session functions, and the PHP Session setting "auto_start" can cause problem with Jamroom's session functionality, especially if you are running PHP 5 and newer. It is simple to disable this setting for Jamroom only (therefore it won't impact other scripts on your server that may need this setting enabled) - simply add the following line to the .htaccess file in your Jamroom directory (create one if it does not exist):
php_value session.auto_start 0
Save the file, and Jamroom should function normally.