Live updates: Lightning vs. Capitals

Fatal error: Uncaught exception 'Zend_Cache_Exception' with message 'Invalid id or tag 'libMemcacheplayer_live.tbo.com' : must use only [a-zA-Z0-9_]' in /usr/share/php/library/Zend/Cache.php:209 Stack trace: #0 /usr/share/php/library/Zend/Cache/Core.php(679): Zend_Cache::throwException('Invalid id or t...') #1 /usr/share/php/library/Zend/Cache/Core.php(303): Zend_Cache_Core::_validateIdOrTag('libMemcacheplay...') #2 /www/libsyn/html5-player/application/Bootstrap.php(62): Zend_Cache_Core->load('player_live.tbo...') #3 /usr/share/php/library/Zend/Application/Bootstrap/BootstrapAbstract.php(681): Bootstrap->_initSession() #4 /usr/share/php/library/Zend/Application/Bootstrap/BootstrapAbstract.php(634): Zend_Application_Bootstrap_BootstrapAbstract->_executeResource('session') #5 /usr/share/php/library/Zend/Application/Bootstrap/BootstrapAbstract.php(598): Zend_Application_Bootstrap_BootstrapAbstract->_bootstrap(NULL) #6 /usr/share/php/library/Zend/Application.php(355): Zend_Application_Bootstrap_BootstrapAbstract->bootstrap(NU in /usr/share/php/library/Zend/Cache.php on line 209