Added Update to ensure support with later versions of the SBL

extension.driver.php

@@ -13,7 +13,7 @@ public function about(){
 				)
 			);
 		}
-		
+
 		public function getSubscribedDelegates() {
 			return array(
 				array(
@@ -23,31 +23,59 @@ public function getSubscribedDelegates() {
 				)
 			);
 		}
-		
+
 		public function initializeAdmin($context) {
 			$page = $context['parent']->Page;
 			$assets_path = '/extensions/referencelink/assets/';
-			
+
 			// load autocomplete JS
 			$page->addScriptToHead(URL . $assets_path . 'referencelink.js', 200);
-			
+
 			// load autocomplete styles
 			$page->addStylesheetToHead(URL . $assets_path . 'referencelink.css', 'screen', 100);
 		}
-		
+
 		public function uninstall(){
 			$this->_Parent->Database->query("DROP TABLE `tbl_fields_referencelink`");
 		}
-
-		public function update($previousVersion){	
+
+		public function update($previousVersion){
+
+			if(version_compare($previousVersion, '1.3', '<')){
+				try{
+					$fields = Symphony::Database()->fetchCol('field_id',
+						"SELECT `field_id` FROM `tbl_fields_referencelink`"
+					);
+				}
+				catch(Exception $e){
+					// Discard
+				}
+
+				if(is_array($fields) && !empty($fields)){
+					foreach($fields as $field_id){
+						try{
+							Symphony::Database()->query(
+								"ALTER TABLE `tbl_entries_data_{$field_id}`
+								CHANGE `relation_id` `relation_id` INT(11) UNSIGNED NULL DEFAULT NULL"
+							);
+						}
+						catch(Exception $e){
+							// Discard
+						}
+					}
+				}
+			}
+
 			if(version_compare($previousVersion, '1.2', '<')){
-				$this->_Parent->Database->query("ALTER TABLE `tbl_fields_referencelink` ADD `limit` INT(4) UNSIGNED NOT NULL DEFAULT '20'");
-				$this->_Parent->Database->query("ALTER TABLE `tbl_fields_referencelink` CHANGE `related_field_id` `related_field_id` VARCHAR(255) NOT NULL");
+				Symphony::Database()->query("ALTER TABLE `tbl_fields_referencelink` ADD `limit` INT(4) UNSIGNED NOT NULL DEFAULT '20'");
+				Symphony::Database()->query("ALTER TABLE `tbl_fields_referencelink` CHANGE `related_field_id` `related_field_id` VARCHAR(255) NOT NULL");
 			}
 
+
+
 			return true;
 		}
-		
+
 		public function install(){
 			return $this->_Parent->Database->query(
 				"CREATE TABLE `tbl_fields_referencelink` (