Build Parameters don't match metadata. Please update build parameters.

I keep getting this error message on saved trays. This is from bringing in the geometry directly from SolidWorks Part files, not from an STL file. If I delete the part in the build tray and reload it, GrabCad print seems to work fine with it. It doesn't happen all the time, but quite often.

Anyone have any insight into what might be the problem? I don't see anywhere that I could even "update build parameters".