Whenever i open my main world, minecraft closes. i didn't, until today, receive a crash report. in MCEdit it says "future Block" is everywhere, though i think that software is outdated and not showing 1.6 or 1.7 blocks. not sure what to do here, rather annoying having to reopen Minecraft
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Duplicate of MC-19629. You've got a malformed attribute on an item. You'll have to remove it using third-party tools if you want to save that world.