I just played my now level 5 nomad and when I ran out of melee weapons I switched to my crossbow. I had the bolts for it as well but when i tried to use it the log  said something along the lines of "you need arrows to use a bow". Later on I found some arrows and I was actually able to use them with the crossbow.

Crossbows had the wrong type set up. I'll fix it in the next version, but it will remain like this for your current run as the world has already been generated.

Fixed in v0.2.2

nice xD