Nebojsa,
Your getting a 404 because the Typekit servers are rejecting your domain. Meaning, every font belongs to a kit in TypeKit, in that kit you need to specify which domains these fonts are served under. If the particular site your working with is not listed here, it will not work and give you a 404.
http://help.typekit.com/customer/portal/articles/6857-using-typekit-while-developing-locally
In your case, if your site is catswithclounhats.com and if your serving the font under the virtualized site catswithclounhats.com.moovapp.com then the top level domain (moovapp.com) needs to be included in your kit.
good luck.