I had a look in the node_modules directory under mojito and found both CSS files. So the question is why does mojito serve the .js files correctly but fails to server the CSS?
There are many others but basically all the .js files get downloaded correctly.
@Daniel, in 0.5.x there is a known issue with the CSS files when using YUI from the mojito server instead of using yui cdn. I wonder if that's the case here? Two questions:
are you trying to insert those files manually? or YUI is trying to load them dynamically?
are you using a custom yui section in your application.json? If yes, can you share it so we can try to replicate the issue.
in Yahoo! Mojito