[wsw1217]

Any ideas?
I upgraded to Mountain Lion DP3 and my BDM is the latest version.
I am not able to sync and backup.

[pkcable]

Any Mac users want to take this one? I'm a PC guy.

[Rowe6]

I had this issue but only before the latest DM MAc update, is your version up to date?

I had to connect the handset and reboot the handset, on startup the blackberry would connect to DM. As I said though, this has gone away with the latest update thankfully, now I just can't sync my calendars instead!

Try the reboot workaround

[wsw1217]

it doesn't work with my phone.
Finally, I solved the problem by security wipe my phone(the first option).