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I finally got it to work today. I don't know why it wasn't working, but all I did was import the asset delete the asset folder and import it once more and it all works now.

This is happening on 2017.3 and 2018.1 as well. Same exact behavior, warning messages and all. I cannot generate Types. Attempting to do so crashes Unity and I have to force quit to get out.

Mac OS High Sierra 10.13.4

Bolt 1.3.0

Unity 2017.3, 2017.4 and 2018.1