Type Error: Cannot read property 'bounds' of undefined

Version 3.0 trying to Preview I get the error above. This model generates linuxcnc gcode in Version 2.8 but has some bad paths the cut through part. I verified manifold in Blender using the 3D print addon. This forum won’t allow me to attach an stl file.

This is a hydrofoil wing that is almost 1 meter across on a giant 52x52inch cnc router table.

oops. this error is the result of zealous optimization in another part of the code. will push a fix today. thanks for the bug report.

should be fixed in 3.0.D13 which is live now