BuildCraft version:
Forge version:
Link to crash report or log:
Singleplayer or multiplayer:
Additional information:

missing all the required info from the template so i can only guess what's going on so here are some options that might cause this:

• you have outdated versions of codechickenlib/integrated dynamics, update those if present
• you are on a server and youc lient has content mods that are not on the server, remove those or add the mods to the server
• something else, use the search on the issues for other causes and fixes mentioned before