Baking lighting into vertex color using Maya (Turtle) - recognize this problem?

AndyZ

Does anyone recognize this problem?  I am baking lighting into vertex color in Maya and while I do see the shadow, I am not getting what I expect at all (smoother, contiguous results).  If I paint verts manually, I get what I expect, but strangely, once I do a Turtle bake, even if I get my Vertex Paint Brush out and paint again manually, I can only contribute to the pattern below - it is like the verts have been masked or broken or something.

AndyZ

Got it sorted - there seems to be a bug with Turtle/Maya that wants the scene to be saved, closed and reopened.  Now it works: