Hi,
I can also see your site. Please follow these instructions: http://x10hosting.com/wiki/How_do_I_Flush_my_DNS_Cache
http://x10hosting.com/wiki/How_to_Clear_Your_Browser_Cache
Hi,
The root of your website loads fine with a directory listing, so there is no server issue.
Have you tried deleting the plugin's folder via FTP? (Make a local backup first, so you can re-upload it if it messes things up any more).
Hi there,
You've defined the co.cc domain as an addon, which I believe means it has a folder of its own which you specify when adding it. As you've already changed to site URL in wordpress, you'll need to ensure all of the files for wordpress are inside that directory, or the settings will be...
You do currently have an addon domain associated with your account: amscorpmx.com
Is this the domain you're trying to add? There is a chance that the original domain is still present in the backend, so it's giving you the error-even though you can't see the domain.