I haven't had any issues playing Minecraft on either of my Xbox 360's but since the update today neither will load my save whether it's on a USB stick, the hard drive or the cloud save.
I've reset the cache for each device and reapplied the update several times to no avail. I also tried playing the game without the update but it doesn't let you as it disconnects you from Xbox live and tells you it's the trial version. Who in their right mind makes you pay $20 for a game that you have to be online to play, even though it's a mainly offline game?
Anyways, it freezes as soon as I tell the game my difficulty setting and it begins to load.
This is the closest thing I've found to support. Any suggestions would be appreciated.