Hm, I didn't test with any of the Galore mods, that could be it, since I know it works with both Lignumis and Maraxsis (it specifically checks for "gear-wheel")
However, it seems to be working perfectly with More Galore, Vanilla Galore Continued, and Space Age Galore; game loads up fine, and all possible gear wheel recipes appear in the Gearery.
I can avoid the issue without knowing which mod causes it (though I would have liked to figure that out) by simply adding a check to ensure ingredients field exists before attempting to access it. Implemented the fix in v1.0.2 (and it should reveal the name of the problematic recipe in the log, in theory)
Fluid recipes with the name "gear-wheel" actually work perfectly fine (vanilla space age has iron gear casting, that would technically be allowed in the Gearery, if it had any fluid inputs/outputs)