Q: when I shut down computer I get a clear grey screen telling me I have to shut computer of using the power button?

Everytime I shut down my computer it gets a grey transperent screen over the desktop and it has a box in the middle that tells me I have to shut the computer off holding the power button until the computer quits.

I had been trying to install a print/scan driver. Also during the course my Suitcase fusion app tells me it can't open the fusion fontvault at that location.

I've been using suitcase for quite awhile now so I'm not sure wht it's acting up now?