Apple recently announced a new MobileMe Calendar beta that offers an improved interface and enables calendar sharing with other MobileMe users.
The MobileMe Calendar beta functions as a cloud-based CalDAV server, similar to the iCal Server included in Snow Leopard Server. Calendars on your Mac are now synced with MobileMe via CalDAV. Previously, calendars on your Mac were synced with MobileMe through Sync Services.
We think this is a good move on Apple's part. Sync Services is very fragile, and the sooner Apple can move away from it the better. Syncing with MobileMe via CalDAV is a step in the right direction and should make MobileMe syncing more reliable and extensible. That's the good news.
The bad news is that BusyCal does not currently support CalDAV and the MobileMe CalDAV calendars will appear read-only in BusyCal. Therefore, BusyCal users should NOT use the MobileMe Calendar beta at this time.
We are working on CalDAV support in BusyCal and expect to release a public beta that is compatible with the MobileMe calendar beta later this summer. If you are a BusyCal user, please wait until the BusyCal public beta is available before using the MobileMe Calendar beta. You can be notified of its availability by signing up here:
http://www.busymac.com/beta.html
If you are already using the MobileMe calendar beta, you have two options:
1) Use the new MobileMe Calendar beta with iCal. Your MobileMe calendars will be read-only in BusyCal.
If you want to continue using the MobileMe Calendar beta, you'll have to use iCal for editing events on your MobileMe calendars. The MobileMe calendars will appear read-only in BusyCal. You can continuing using BusyCal to edit shared calendars on the LAN and on Google.
or
2) Switch back to the old MobileMe Calendar and continue using BusyCal.
If you want to switch back to the old MobileMe Calendar, which is compatible with BusyCal, you can do so by clicking the following link: