This issue has been fixed in MeetingPlace Outlook 4.1.3.61 and 4.2.5.21 hot fix (FA00183). download the hot fix from CSRC.
Installation Instructions:
1. Replace the existing setup.exe and upgrade.exe in the \latitude\mpweb\mpoutlook folder.
2. Run ConfigClients.exe. Save and close.
3. Have end-users install by running the setup.exe program.