We released version 3.0 of the Silhouette Plugin for MTC. This version adds the Silhouette Portrait along with a new cutting option "Cut by Knife Point", which will allow you to move your knife around the mat and choose where to cut your project.
Remember: To use the Print and Cut features on any Silhouette machine, always work in Landscape mode in MTC.
If using the Portrait machine for a print-and-cut, make sure to use the "Silhouette Cameo" registration marks when printing. Also, use the "Silhouette Mat" in MTC (the 8.5x12" mat)