I think this mod is causing a very strange, albeit not game breaking, bug with the Chisel mod.
It doesn't appear to be an ID conflict, I checked all the IDs between mods to make sure.
Anyway, whenever you have a chisel and open its gui and there is no block in the chisel, it adds in a strange block.
I've been told that this block appears in AE Import/Export buses as well after a server restart.
The chisel bug is not such a big deal, but the AE one is a massive issue, because it means that AE won't interact with inventories to pull from them, as it would only be looking for this block.
That usually will cause tons of lag and break things pretty badly.
Note this is on v0.2.2