Add progress bar to wizard component

I’m having trouble editing the CSS on the component pack. I’d like to be able to edit progressindicator.css then re-compress the folder and re-upload. But every time I do that I get a skuid error at runtime:
1. An error occurred while attempting to load the “progressindicator” Component Pack. There may be an issue with the name or location of your Component Pack manifest files. Error: Unable to retrieve content of file

Is it because I’m just using the Mac default compress folder function? Do I need to do some kind of different way to make the folder into a .zip? 

All I want is for the font to be a bit smaller :slight_smile: