Several people mentioned problems with 6701 toolpaths but Klaus was the first to send me an STL file that let me replicate the error. It was a bad bug where some triangles could be totally ignored when using a flat endmill. A new version is being uploaded now that has a fix and adds the slicing back in. Slicing is not totally done but it’s in the build already and I need to post it now to get rid of the bug above. Since it’s a public release you can get it at http://www.grzsoftware.com/v2dl.php .