SkyFactory 3 Crash Send Help

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Henry Link

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Dec 23, 2012
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That looks to be an issue authorizing your account on Mojang's servers. You might want to make sure you can log in and play vanilla minecraft first. This assumes you aren't trying to pirate minecraft and you have a valid minecraft account. If not I highly suggest you get a minecraft account. FTB is free, but it does require you to have valid paid minecraft account.