I'm having the same problem.
I bought a domain name on another site, and parked it with my x10hosting domain.
My x10hosting domain works fine, but when I go to the domain I bought, I'm just getting a blank page.
I just emailed my domain provider, and received this response,
Thanks for your email.
The nameservers look to be correctly configured for your domain, and because you are not using OUR nameservers, This looks to be a question for your hosting company. Really all that you would control on our side is the nameservers. There's no way for me to see any configuration of DNS or your hosted files so there is little I can do for you.
I recommend contacting your Hosting Provider and providing them with all of this information. They should have no problem helping you fix this issue.
So I'm guessing there's some issue with x10hosting.
I have a free account though, so I can't contact support.