Although nothing was listed n the BB support site these may help
Re-add the BlackBerry network interface by completing the following steps:
1.Within the menu bar, select the Apple icon
2.Select System Preferences
3.Tap Networks
4.Note the name of the BlackBerry interface listed
5.Select the Plus sign to add a new interface
6.Within the Interface drop down, select the other BlackBerry interface listed
7.Select Create
8.Select Apply
9.Restart the computer
Another
Manually sync your contacts - BlackBerry Link for Mac OS - 1.2.2
A few others
Related resources - BlackBerry Link for Mac OS - 1.2.2
Synchronization completes successfully but no information is transferred when using BlackBerry Link for Mac