An issue has been identified in the Yahoo! Messenger encryption code of SimpPro and SimpLite-Yahoo version 2.2.2.

When this issue occurs, an error message Encrypted with an unknown key is displayed in the Yahoo! Messenger (or Trillian) client, instead of the decrypted message.

This issue is fixed in version 2.2.3 of SimpPro and SimpLite-Yahoo, available from the Products updates section of our Web site.