I am able to successfully load up Minecraft and bring up my worlds and what not, but when I go to physically load up the worlds, I'm only in the world for about 5 seconds before the game crashes. It started doing this around the 15w42a snapshot and then preceded to do this with all the 1.9 snapshots, but I can load up my worlds with 1.8.8.
MC-92429
Minecraft will not load worlds
Resolved
Duplicate
0
Michael Donovan
(Unassigned)
Unconfirmed
Minecraft 15w45a
Retrieved
Thank you for your report.
However, your ticket has been resolved as a duplicate.
This issue has been linked to the original bugreport: MC-90269. You can find or add further information on that report.
If you haven't, please search before reporting any bugs, as it's likely that one exists already.