2 Sided Project Problem

Happy Saturday Friends. I am trying to make Jewelry boxes using Andy Bird’s Files available on VCarve. When I flip the board, I get about a 1inch “Air Pass” on all toolpaths. I’m sure it’s something simple. What can I be missing? Thanks in advance.

Check to see where the zero point is set too. Sounds like that file has it set to the table instead of the top of the material.