After installing El Capitan my Mac began having problems with a wired Logitech mouse. It would still move but wouldn't click on anything, left or right and I was forced to shut down the computer by holding in the power button. I dug out my old magic mouse I quit using because I'd dropped it so many times it barely functioned. I broke down and purchased a new Magic Mouse 2 and now am having problems with wait cursor locking it up. It will still move but won't come out of the spin of death and again am forced to hard shut down the computer by holding in the power button. I switched back while it was doing this to the old Magic Mouse but it just kept spinning. I haven't done anything in the mouse setup in System Preferences for the new mouse, just powered it up and used it. What am I doing wrong?