I hope this is the right place...
Mod Pack: Direwolf20 v1.0.23 minecraft v1.6.4
Mod & Version: Thermal Expansion 3.0.0.7
Pastebin link to crash log: No crash
Whats the bug? Impulse Item ducts have a 50-100% chance of mis-identifying their whitelists. IE: whitelisting slag and dirt allowed...
