I have attached a couple of files. The dxf is from Autocad and the associated turn tap file generated by LazyCam 2.0x.

Mach 3 is hanging when trying to load the tap file.

LC is generating what looks like impossible k numbers in the gcode for Mach3 to process.

Apologies if this is already in hand for fixing or that my dxf is at fault.

That is a known bug and is fixed for the next rev Should be out tonight or tomorrow.
Thanks
Brian