Cannot install Organizer Tool

I get following error msg upon trying to run Ceptara setup. Please advise.

Name: 

From: /organizer/2010/Organizer.vsto

************** Exception Text **************

System.Deployment.Application.DeploymentDownloadException: Downloading /organizer/2010/Organizer.vsto did not succeed. ---> System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 64.5.53.74:80

   at System.Net.Sockets.Socket.DoConnect(EndPoint endPointSnapshot, SocketAddress socketAddress)

   at System.Net.Sockets.Socket.InternalConnect(EndPoint remoteEP)

   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Int32 timeout, Exception& exception)

   --- End of inner exception stack trace ---

   at System.Net.HttpWebRequest.GetResponse()

   at System.Deployment.Application.SystemNetDownloader.DownloadSingleFile(DownloadQueueItem next)

   --- End of inner exception stack trace ---

   at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.GetManifests(TimeSpan timeout)

   at Microsoft.VisualStudio.Tools.Applications.Deployment.ClickOnceAddInDeploymentManager.InstallAddIn()