see here http://stackoverflow.com/...ified-domain-name-us
Also check your htaccess file you may have an error in it. If not sure then just put it back to the default version you can get from the download.
Once you can get the site up then, run this free checker to see how your server does. You will get a better report if the shell_exec is enabled.
https://developers.oxwall.com/store/item/1356
But intil then be sure to check the RIGHT SIDE of this page to check the requirements.. http://www.oxwall.org/hosting
Also checked the requirements and everything checks out ok.
Im thinking it has something to do with the domain since the new user i added to the panel dont have a real registered domain it caused other scipts to not have the images displayed sicne its trying to reach a domain that is non existant. ill try to install oxwall on my main user manually with a registered domain and post results
And that looks like the default htaccess file so i think your fine there.