It apparently attempts to minify everything and you exclude item by item. However, I have to go through my code, one by one and add exclusion by exclusion so I can get my site working properly (with nothing excluded, it broke certain functionality of my site). This is too cumbersome and unworkable.
I found an alternate plugin that allows me to check/uncheck each js/css line item and is much easier to identify what is causing issues. I don't know how anyone can use this plugin properly unless they are a hardcore techie.