Index: trunk/kernel/include/language.php
===================================================================
diff -u -N -r912 -r923
--- trunk/kernel/include/language.php	(.../language.php)	(revision 912)
+++ trunk/kernel/include/language.php	(.../language.php)	(revision 923)
@@ -420,10 +420,20 @@
 
             if($data["LanguageId"]>0)
             {
+            	if ($c->m_dirtyFieldsMap["PrimaryLang"] == 1) {
+            		$sql = "UPDATE ".$this->SourceTable." SET PrimaryLang = 0";
+            		$this->adodbConnection->Execute($sql);
+            	}
+            	
                 $c->Update();
             }
             else
             {
+            	if ($c->m_dirtyFieldsMap["PrimaryLang"] == 1) {
+            		$sql = "UPDATE ".$this->SourceTable." SET PrimaryLang = 0";
+            		$this->adodbConnection->Execute($sql);
+            	}
+            	            	
                 $oldid = $c->Get("LanguageId");
                 $c->UnsetIdField();
                 $c->Create();