When I upload a model, Cura shows the bottom few layers as expected with a line fill only, doesn't matter which one you choose. Then as you move the slicer slider up...All you get is the outer most shell and a hollow interior, but no interior walls or infill, and that's exactly what prints. Also 0 - 95 % fill all say the same time (4-6 Hours). Infill ONLY shows if it's 100%, then the time jumps to day(s) for print time estimate... Any thoughts why this is happening? Solutions greatly appreciated.