If you are seeing a default apache page error then your dns needs to be refreshed.

To fix this just enter your Cpanel, then click the "advanced dns zone editor" then click edit next to the dns zone and save the same settings. This will refresh the dns for this domain right away, but you will not see the updates for about an hour. Also running: ipconfig /flushdns from the windows run box and rebooting your local computer after refreshing the dns zone can help.