Index: SoObjects/SOGo/SOGoCacheGCSObject.m
--- SoObjects/SOGo/SOGoCacheGCSObject.m.orig
+++ SoObjects/SOGo/SOGoCacheGCSObject.m
@@ -599,7 +599,7 @@ static EOAttribute *textColumn = nil;
         parentPathValue = @"NULL";
 
       if ([GCSFolderManager singleStoreMode])
-        sql = [NSString stringWithFormat:
+        sql = [NSMutableString stringWithFormat:
                           (@"INSERT INTO %@"
                            @"  (c_uid, c_path, c_parent_path, c_type, c_creationdate, c_lastmodified,"
                            @"   c_deleted, c_version, c_content)"
@@ -610,7 +610,7 @@ static EOAttribute *textColumn = nil;
                         (int)creationDateValue, (int)lastModifiedValue,
                         propsValue];
       else
-        sql = [NSString stringWithFormat:
+        sql = [NSMutableString stringWithFormat:
                           (@"INSERT INTO %@"
                            @"  (c_path, c_parent_path, c_type, c_creationdate, c_lastmodified,"
                            @"   c_deleted, c_version, c_content)"
