... you can still sync MPE on your desktop with Business Calendar Pro and MPE Tasks on your phone. On the main MPE screen on your PC, right-click on All in the Contacts section and on Appointments, Tasks, and Notes in the Organizer section and choose Synchronize. Obviously, you need to have the MPE Client running on your phone.
Otherwise, at least in my case, MPE has become worthless for its original purpose - syncing with Outlook.