Internal error in gpgOL

I have installed gpg4win which includes gpgOL. When I try to encrypt the body of a message using Outlook 2010 I get an error “Internal error in gpgOL. Could not find all objects.” If I try to encrypt an attachment that works. I have tried this on two different WIndows 7 64bit machines and get the same error.

Dear John,
thanks for trying Ggp4win.

Which version did you try?
Is the latest beta better if you haven’t tried it yet?

https://wiki.gnupg.org/Gpg4win/Testversions

Best Regards,
Bernhard