Minecraft crashed all time after install [sphax-purebdcraft1.8512x.zip]

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What I expected to happen was...:
Describe what you thought should happen here

What actually happened was...:
Minecraft crashed all time after install [sphax-purebdcraft1.8512x.zip]
wanted to open it but then all time: "Uhoh, it looks like the game has crashed!Sorry for the inconvenience

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
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