Index: textcommaformatter.module
===================================================================
--- textcommaformatter.module	(revision 2810)
+++ textcommaformatter.module	(working copy)
@@ -40,7 +40,10 @@
   
   foreach (element_children($element) as $key) {
     $item['#item'] = $element[$key]['#item'];
-    $values[] = ($allowed =_text_allowed_values($item)) ? $allowed : $item['#item']['safe'];
+    $value = ($allowed =_text_allowed_values($item)) ? $allowed : $item['#item']['safe'];
+    if ($value != '') {
+      $values[] = $value;
+    }
   }
   
   return implode(', ', $values);