BuildCraft version: 7.99.21
Forge version: 14.23.5.2807
Link to crash report or log: https://pastebin.com/uuZX9SSy
Singleplayer or multiplayer: single
Steps to reproduce:
Additional information:

Can you retry but without buildcraft? It looks like ic2 can't find one of it's own API methods...

relaunched without buildcraft and it worked

Try setting advanced tooltips to false, either in-game (F3+H) or in options.txt