Hardcore Ender Expansion said that I should report this to you. Also, pinging @chylex
Log: http://pastebin.com/V1r1THTL
Versions:
HEE: 1.8.2
AppleMilkTea2: V2.7h.
Forge: 1481

Thanks to your report. I'll fix it in next update.

Thanks for the fix!