I've stored a morph target and then sculpted on a layer. Now it seems that my morph brush isn't working. Do layers interrupt morph targets? I've tried baking the layer info but that doesn't work either.
No, using Morph targets and layers together is the most flexible method in ZB. At your highest level store a morph target. Then create a layer on the same level. Now any detail you sculpt on that layer can be 'erased' with the morph brush. Just make sure the layer is in 'Record' mode.