Problem with Exotic Weapons

[Aril]

I'm struggling with a problem with the Exotic Weapon Proficiency.

I've just created a new Exotic Weapon. The weapon appears and can be bought in the Weapons menu.

For some reason, it REFUSES to appear in the drop-down menu of the Exotic Weapon Proficiency.

This weapon was built using the longbow as the base I modified to create what I needed. In the Tags menu, I've removed Weapon Proficiency: Longbow.

I'm kind of at a loss for what's going on.