Some Fusewood items/blocks are not registered in OreDict... I don't expect this getting fixed but still... maybe one day someone fork this and start working on it actually...
List of stuff:

1. Fusewood planks
2. Fusewood stairs
3. Some other stairs not oredicted too

What? We can have meta up to 15 for blocks...

Heh, I don't really know much about modding but joshiejack said something like "That block doesn't exist. The metadata only goes up to 11. :P" on one of issues (It's called "More localization", you can check this) on Mariculture repository. This is why I thought it's related to metadata since fusewood stuff not oredicted for some reason.

He was referring to that particular block, which is only supposed to have metadata up to 11. In general, it goes higher. So this isn't an issue.

Ok, well. It still an issue since some fusewood stuff isn't oredicted.

P.S maybe I'll fix this later.