when loading up a texture/behavior pack. and inmiddiatly join the world from the settings,there will pop up a massage stating:"there is a problem loading this world".and joining the world after that,deletes all of your progress and resets the world to its original phase.what i think what happens is that they dont load the texture packs and minecraft gets confused and just breaks.
Comments 2
Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.
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Which packs are you trying to use exactly?