Problem: Cricut machine cannot read the cut sensor marks. Usually occurs with glossy printable vinyls.Error message: "The machine cannot read the cut sensor marks. Make sure you're using material, it is positioned correctly on the mat, and the cut sensor marks are fully printed. To try again, press the flashing Go button on your machine."Reason: Glossy sticker papers are too shiny for the machine reader to work properlySolution: Paste matte scotch tape over the cut sensor marksMore details and pictures: click here.