PGP Outlook plugin issue

Hi!

I use PGPDesktop10.2.1 MP3 Windows with Outlook 2010.

I have a problem with PGP Outlook plugin.

When PGP service is ON, body of the some Email massages is not showed.

And when  PGP service is OFF and after Outlook restart, body of this Email massages is showed normaly.

Please help me resolve this issue.

Thank you very much!