ZBrushCentral

Layer brush not working on model

So I have a model I’ve been working on in zbrush, and I am trying to use the layer brush on it. But when I paint on it with the layer brush nothing happens. It doesn’t matter z-add or z-subtract, any alpha that might be used, any draw size or strength. Nothing. If I switch to a primitive it immediately works. All other brushes work on this model though. Any idea what might cause this?

Please advise.
Thanks

Nevermind. I had a morph target saved. I deleted it and it works fine now.

Thanks!