AHA! Got it!
There's an equivalent device under "MO-2 Header 2" up in the list that DOES appear when you try to add in a schematic window. That one works just fine.
Apparently the "SCREWTERMINAL" package is just there to tease us. 
AHA! Got it!
There's an equivalent device under "MO-2 Header 2" up in the list that DOES appear when you try to add in a schematic window. That one works just fine.
Apparently the "SCREWTERMINAL" package is just there to tease us.