Index: /trunk/tools/chip_outputs.pl
===================================================================
--- /trunk/tools/chip_outputs.pl	(revision 20814)
+++ /trunk/tools/chip_outputs.pl	(revision 20815)
@@ -51,5 +51,5 @@
     " FROM chipProcessedImfile " .
     " WHERE chip_id = $chip_id";
-$sql .= " AND class_id = $class_id" if defined $class_id;
+$sql .= " AND class_id = \'$class_id\'" if defined $class_id;
 
 # List of chips