Guys i have shared my task list with one co-worker and it works.. and i am trying to share it again with my manager and this is the error :

method: CreateMountpointRequest
msg: sharing the same resource by more than one account is unsupported
detail: soap:Receiver
trace: btpool0-7:1238080799671:40e78572ddbd157a
request: 3363a66666666666666662d666666662d666666662d6666666 62d6666666666666666666666663b6578703d31333a3132363 93631363639313132353b747970653d363a7a696d6272613b


We are all running rc1 of Zimbra Desktop. Please help.. all accounts are active.