I have some spammers..what is the best way to delete all of their threads at one time? I deleted the user and his threads but it still shows..when i try to delete again i get 
				
			- XenForo_Application::handlePhpError() in XenForo/Model/Alert.php at line 529
 - XenForo_Model_Alert->getAlertOptOuts() in Nobita/ApprovedThreadNotice/Model/InlineMod/Post.php at line 53
 - Nobita_ApprovedThreadNotice_Model_InlineMod_Post->_getPostAlertPreferences() in Nobita/ApprovedThreadNotice/Model/InlineMod/Post.php at line 62
 - Nobita_ApprovedThreadNotice_Model_InlineMod_Post->_getPostAlertAction() in Nobita/ApprovedThreadNotice/Model/InlineMod/Post.php at line 8
 - Nobita_ApprovedThreadNotice_Model_InlineMod_Post->deletePosts() in XenForo/ControllerPublic/InlineMod/Abstract.php at line 125
 - XenForo_ControllerPublic_InlineMod_Abstract->executeInlineModAction() in XenForo/ControllerPublic/InlineMod/Post.php at line 40
 - XenForo_ControllerPublic_InlineMod_Post->actionDelete() in XenForo/FrontController.php at line 310
 - XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 132
 - XenForo_FrontController->run() in /home/vacation/public_html/index.php at line 13