I'm getting a bug message saying: "Error while running setup for prototype "long-wood" (item): Must have a valid fuel_category when fuel_value is used"

I just discovered that myself. I'll have a new version up when I can.

Just an FYI, but these discussion areas on the mod-portal aren't a very effective way to contact mod authors right now because they don't have any sort of notification system. The Factorio devs have mentioned wanting to improve that.

And now the new version is uploaded.