Board Thread:General Discussion/@comment-96.39.168.172-20130225003336/@comment-6741617-20130225142458

are you in single player or multiplayer - if multiplayer Equivalent Exchange might be banned - if not covalance dust might be banned

if single player Tekkit Classic or Lite - if lite the reason is because EE is not there in Tekkit Lite

If not please try to give more info.