Here is the problem Yosemite does not recognise any backups made under Mavericks. When I formatted my computer and installed Yosemite, it only recognised the most recent back up made by Mavericks (thank god). But now that I've installed Yosemite and I go to access the time machine, I can not access any of my backups made using Mavericks. The backups are still there on the time line located on the right hand side, but when I go to click on a specific date, the TM flicks back to that dates window, but nothing loads, no matter how long I leave my computer... Anyone else have this problem????