A friend of mine was able to slice the model with Cura after performing a Netfabb repair, even though Netfabb said there were no errors with the STL file. SO I did the same thing - ran a Netfabb repair and saved the results as bot STL and OBJ format. Interestingly enough the STL version was smaller than the OBJ version: 19.87 MB vs 40.55 MB. I've never seen a situation before where the OBJ version was larger than the STL version of a model, but oh well.

At any rate I was able to slice the part with Kisslicer so I'm printing it now. Craftware failed to slice it, presumably due to the known bugs it has.