Hi Andria,
Glad it is working for you. I did some testing here and I think you can fix the csshandler. It doesn't work with an empty text file, but if you paste this in there it should work:
<%@ WebHandler Language="C#" Class="mojoPortal.Web.UI.CssHandler" %>
and then you can re-enable the combine and minify business.
I'm going to include the file in the next release of mojoPortal as I think this issue must come up in some percentage of hosting situations and including this file should avoid the issue.
I'm glad to hear about how you found mojoPortal and why you decided to try it. it Is very good to know that more and more web hosts are integrating the Web App Gallery, I'm pretty sure it is a new feature in DotNetPanel so there may still be a few glitches with it, but long term that should help mojoPortal get a lot of exposure so I'm glad to know that web hosts are beginning to roll that out.
I'm sure you'll be an ASP.NET pro in no time, there may be a few struggles to conquer on the way but I'm sure there were also struggles under the lamp stack, its just that you conquered those long ago. I know I've only been playing around on linux for a few years myself and am still no guru yet but I struggled with it more in the beginning. Its like anything else once you've become acquainted with the common issues and solutions it gets much easier.
Best,
Joe