I just had this same problem with the Fontawesome font. For me the problem was the htaccess file I added to the wp-content folder which contained the following:
order deny,allow
deny from all
<Files ~ ".(xml|css|jpe?g|png|gif|js)$">
allow from all
</Files>
Adding the extensions for all the font files in the Hueman theme font folder to this htaccess fixed the problem for me.
