Index: t3lib/class.t3lib_loaddbgroup.php
===================================================================
--- t3lib/class.t3lib_loaddbgroup.php	(revision 6144)
+++ t3lib/class.t3lib_loaddbgroup.php	(working copy)
@@ -283,9 +283,9 @@
 			$sorting_field = 'sorting_foreign';
 
 			if ($this->MM_isMultiTableRelationship)	{
-				$additionalWhere .= ' AND ( tablenames="'.$this->currentTable.'"';
+				$additionalWhere .= ' AND ( tablenames=\'' . $this->currentTable . '\'';
 				if ($this->currentTable == $this->MM_isMultiTableRelationship)	{	// be backwards compatible! When allowing more than one table after having previously allowed only one table, this case applies.
-					$additionalWhere .= ' OR tablenames=""';
+					$additionalWhere .= ' OR tablenames=\'\'';
 				}
 				$additionalWhere .= ' ) ';
 			}
@@ -353,7 +353,7 @@
 
 			$additionalWhere_tablenames = '';
 			if ($this->MM_is_foreign && $prep)	{
-				$additionalWhere_tablenames = ' AND tablenames="'.$this->currentTable.'"';
+				$additionalWhere_tablenames = ' AND tablenames=\'' . $this->currentTable . '\'';
 			}
 
 			$additionalWhere = '';
@@ -411,7 +411,7 @@
 					$whereClause = $uidLocal_field.'='.$uid.' AND '.$uidForeign_field.'='.$val['id'].
 									($this->MM_hasUidField ? ' AND uid='.intval($oldMMs_inclUid[$oldMMs_index][2]) : ''); 	// In principle, selecting on the UID is all we need to do if a uid field is available since that is unique! But as long as it "doesn't hurt" we just add it to the where clause. It should all match up.
 					if ($tablename) {
-						$whereClause .= ' AND tablenames="'.$tablename.'"';
+						$whereClause .= ' AND tablenames=\'' . $tablename . '\'';
 					}
 					$GLOBALS['TYPO3_DB']->exec_UPDATEquery($MM_tableName, $whereClause.$additionalWhere, array($sorting_field => $c));
 
@@ -445,7 +445,7 @@
 						$elDelete = $oldMMs_inclUid[$oldMM_key];
 					} else {
 						if(is_array($mmItem)) {
-							$removeClauses[] = 'tablenames="'.$mmItem[0].'" AND '.$uidForeign_field.'='.$mmItem[1];
+							$removeClauses[] = 'tablenames=\'' . $mmItem[0] . '\' AND ' . $uidForeign_field . '=' . $mmItem[1];
 						} else {
 							$removeClauses[] = $uidForeign_field.'='.$mmItem;
 						}
@@ -498,7 +498,7 @@
 
 			$additionalWhere_tablenames = '';
 			if ($this->MM_is_foreign && $prep)	{
-				$additionalWhere_tablenames = ' AND tablenames="'.$this->currentTable.'"';
+				$additionalWhere_tablenames = ' AND tablenames=\'' . $this->currentTable . '\'';
 			}
 
 			$additionalWhere = '';