This is weird. I've just started at a company that uses Drupal (I havent used it before) and I've been tasked with making some simple CSS changes to a site.
I find the site's theme folder and corresponding CSS and make a simple change just to test things out. Nothing happens. I clear the cache via admin and get a 500 error. Fine. So I use drush to clear CSS and JS. It says it works but still no change. I clear my browser cache too just to be sure.
I use Chrome's inspector to trace back the paths of the CSS files I'm working on - they're correct. I even check the themes .info file to see if all the .css files are linked - they are.
So...what am I missing here? What on Earth is going on?
(Edit: CSS aggregators are off)