In base64toString, need to return the output.
diff --git a/js/encoding/DataUtils.js b/js/encoding/DataUtils.js
index 8867c12..9324e38 100644
--- a/js/encoding/DataUtils.js
+++ b/js/encoding/DataUtils.js
@@ -106,7 +106,7 @@
 
      } while (i < input.length);
 
-     //return unescape(output);
+     return output;
   };
 
 /**