[1.1 + Royalty] Mortars not working "No shell for mortar found"

[IsaacTheKhajiit]

My mortars were working fine up until I got a mech cluster with an anti-mortar mech.  Now when I attempt to use mortars I get the error message that no usable shells for the mortar was found.  I double checked to make sure the colonists are zoned for the area the mortars + shells are located. (Is there anything else I might be over looking?) I already destroyed the anti-mortar mech but I have a suspicion the bug may be related to this, since this only started to happen after it showed up.  Only mods I have right now are floor textures and hairstyles.

[Tynan]

Was the mortar itself set to allow the desired shell type?