When i try of show the calendrar of other users in the Zimbra desktop (version 1.0) i obtain an error:

A network service error has ocurred

The details are:

method: GetFreeBusyRequest
msg: system failure: java.lang.NullPointerException
code: service.FAILURE
detail: soap:Receiver
trace: btpool0-7:1245091397215:d94b2fccc24a00b8


With the web version i don't receive the error message..