![Smile :)](./images/smilies/icon_e_smile.gif)
It's gotten through loading all the data.lua and data-updates and data-final-fixes for all mods, but before the game main menu appears, the error message appears.
Looking at my code though, it does seem to think that your board is a fluid. Sample reverse recipe....
![Idea :idea:](./images/smilies/icon_idea.gif)
Edit: Found it. Your routine 'bobmods.lib.replace_recipe_item' inserts type="item" into the recipes. Although the official API documents talk about this being a valid type, the vanilla game never uses it, so I took the code out that was handling it.
![Smile :)](./images/smilies/icon_e_smile.gif)