What is a Plugin?
Make the Cut uses what's called plugins in order to communicate with different cutters. It was introduced in MTCInstall3.2.1.exe.
Ever since that vesrion of Make the Cut we've seen "Plugins" for each type of cutting device that MTC supports.
You can visit the download page for MTC and find out which one you will need. It was in MTCInstall3.2.1.exe where you would find the one for Cricut. As of now and most likely forever Provocraft Plugin will no longer be supported. But those who have the plugin are still able to cut using the cricut using Make the Cut v 4.1 and earlier.