Here’s what worked for me:
Download the coupon printer. Be sure to “save” it to your desktop and not to a local directory. Do not directly “run” the installer after it is downloaded. Instead, once you have the file saved to your desktop- close each and every window you have open. You should not have any open applications at all. Now try double clicking on the installer file on your desktop and going from there. I am crossing my fingers for you!