Guess it would help if I cleared the module cache. :)  It works fine now.

-- Fooberichu

I did everything above that you did, and then I also refreshed (F5) the page in question after all that.  I think I set the module cache to 0 additionally.  Aside from restarting the portal, I also went in as host and cleared the cache for the entire application.

The last thing I noticed was that I had linked module.css in my ascx file (just so I could see it while designing it) and I had to remove that.

Another thing that happened was that one or two of my css classes were also defined in portal.css, which loads later in the cycle and overrides module.css;

Hope that helps, can't remember what else I tried.