jtablesession::Store Failed<br />DB function failed with error number 145<br /><font color="red">Table './explorep_base/jos_session' is marked as crashed and should be repaired SQL=INSERT INTO `jos_session` ( `session_id`,`time`,`username`,`gid`,`guest`,`client_id` ) VALUES ( 'de0e9fc57a7c8e8d065215b1c01692ad','1406864637','','0','1','0' )</font><br />
<b>Fatal error</b>:  Allowed memory size of 268435456 bytes exhausted (tried to allocate 71 bytes) in <b>/home/explorep/public_html/libraries/joomla/error/exception.php</b> on line <b>117</b><br />