Using Groupwise client 8.0.1 build 88138, I have a resource called Test. I am the owner of resource Test. I can create an appointment, add Test to it, do a busy search to make sure the time is open, and send it. When I proxy into Test and click Accept to accept the appointment, I get the following error:

Groupwise Error [d101]

User not Found.

Any ideas of what is causing this? If I proxy into Test, I can open the address book and find all of our users (it even autocompletes them for me). I'm not sure what else to try.