Hello,
Seems to be a hostgator issue
You will need to contact hostgator support and ask them to add the site and possibly just the file browser.html to their whitelist. They are running some sort of mod_security on apache and it's detecting an exception and trigger the security violation and thus blocking access to the needed files.
See this
topic.
::Ben
I'm available to customise your themes or plugins for your Geeklog CMS