I have attached the log information… Thanks!
[Error] Sabnzbd: Downloading nzb for episode 'Supergirl.S01E03.720p.HDTV.X264-DIMENSION' failed (http://localhost/getnzb/9836b26f548ea809b0a684bd90422ad779d59ab6.nzb&i=1&r=b487702d9e791956b5cbb2c8aa0ab1ca)
System.Net.WebException: Error: ConnectFailure (Connection refused) ---> System.Net.Sockets.SocketException: Connection refused at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x00000] in <filename unknown>:0 at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0 at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0 at NzbDrone.Common.Http.Dispatchers.ManagedHttpDispatcher.GetResponse (NzbDrone.Common.Http.HttpRequest request, System.Net.CookieContainer cookies) [0x000cd] in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Common\Http\Dispatchers\ManagedHttpDispatcher.cs:46
[Error] ReleaseModule: Downloading nzb failed
NzbDrone.Core.Exceptions.ReleaseDownloadException: Downloading nzb failed --->System.Net.WebException: Error: ConnectFailure (Connection refused) --->System.Net.Sockets.SocketException: Connection refused at System.Net.Sockets.Socket.Connect (System.Net.EndPoint remoteEP) [0x00000] in <filename unknown>:0 at System.Net.WebConnection.Connect (System.Net.HttpWebRequest request) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Net.HttpWebRequest.EndGetResponse (IAsyncResult asyncResult) [0x00000] in <filename unknown>:0 at System.Net.HttpWebRequest.GetResponse () [0x00000] in <filename unknown>:0 at NzbDrone.Common.Http.Dispatchers.ManagedHttpDispatcher.GetResponse (NzbDrone.Common.Http.HttpRequest request, System.Net.CookieContainer cookies) [0x000cd] in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Common\Http\Dispatchers\ManagedHttpDispatcher.cs:46
--- End of inner exception stack trace ---
at NzbDrone.Core.Download.UsenetClientBase 1[NzbDrone.Core.Download.Clients.Sabnzbd.SabnzbdSettings].Download (NzbDrone.Core.Parser.Model.RemoteEpisode remoteEpisode) [0x000bb] in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Download\UsenetClientBase.cs:66 at NzbDrone.Core.Download.DownloadService.DownloadReport (NzbDrone.Core.Parser.Model.RemoteEpisode remoteEpisode) [0x00166] in m:\BuildAgent\work\6c3239faf2b92630\src\NzbDrone.Core\Download\DownloadService.cs:66