--- optionwidgets.module	2008-04-23 12:02:29.000000000 -0600
+++ optionwidgets.module.new	2008-05-01 11:46:04.000000000 -0600
@@ -296,7 +296,7 @@ function optionwidgets_data2form($elemen
     return array($field_key => $keys);
   }
   else {
-    return array($field_key => reset($keys));
+    return !empty($keys) ? array($field_key => reset($keys)) : array();
   }
 }