When your Blackberry writes this to it's log file
what it is trying to tell you is that you are not supplying the password.
It is all so simple.
[11:11:26.480] 2009-07-23
[11:11:26.525] PocketMac SyncManager Started
[11:11:27.685] Blackberry -> /dev/cu.Blackberry
[11:11:29.427] BlackBerry device pin 0
[11:11:30.292] Could not connect to BlackBerry; error code: 3
[11:11:31.162] No mounted media card found.
[11:11:51.165] No mounted media card found.
[11:11:52.362] Finished:0
[11:11:53.496] Progress:ISyncClientConnectingPhase 0
[11:11:55.235] BlackBerry device pin 0
[11:12:00.579] Finished:3
what it is trying to tell you is that you are not supplying the password.
It is all so simple.