The resource cannot be found error in SharePoint 2013 on premise App Deployment

Hi,

I configured App domain for SharePoint 2013  on premise using below links:-

http://sharepoint-community.net/profiles/blogs/configure-an-environment-for-apps-for-sharepoint-sharepoint-2013

http://www.naumanahmed.com/2012/07/sharepoint-2013-app-management-service.html

http://sharepointchick.com/archive/2012/07/29/setting-up-your-app-domain-for-sharepoint-2013.aspx

Everything is configured perfectly but when i add app from SharePoint store and try to open it getting error

”

The resource cannot be found.

Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable.  Please review the following URL and make sure that it is spelled correctly.”

Please suggested me how can i resolved this error.

Thanks

Akash Anand