ttmgraphics

HELP! I am new to the vinyl cutting world. I just bought the USCutter MH 871. It has made only one perfect decal, the very first one I made. Since then I have shut off the cutter and changed vinyl colors. I did not touch ANY settings or make any changes besides the size of the design I wanted cut. My machine keeps re cutting the SAME pattern over and over again. It also starts making crazy little dots like you were to stab in repeatedly with a pen. Any suggestions or help would be so helpful as I am to the point of throwing it out the window and I've only had it for one day!! Thank you in advance!!