Precaution added for old left-over plugin prefs using hooks

e107_handlers/e_parse_class.php

@@ -1959,9 +1959,13 @@ class e_parse extends e_parser
 										}
 
 									}
+
+									if(is_object($this->e_hook[$hook])) // precaution for old plugins. 
+									{
 										$sub_blk = $this->e_hook[$hook]->$hook($sub_blk,$opts['context']);
 									}
 								}
+							}
 
 							/**
 						    * / @deprecated