I got this error message from the “Scheduler” in the logs. I got my first download in Sabnzbd that failed since I started using Nzbdrone.
Error occurred while execution task NzbDrone.Core.Download.CheckForFailedDownloadCommand
System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary2.get_Item(TKey key) at NzbDrone.Core.Download.FailedDownloadService.<>c__DisplayClassc.<GetHistoryItems>b__b(History h) in m:\\buildAgent1\\work\\328d72309b633a8\\src\zbDrone.Core\\Download\\FailedDownloadService.cs:line 127 at System.Linq.Enumerable.WhereListIterator
1.MoveNext()
at System.Collections.Generic.List1..ctor(IEnumerable
1 collection)
at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source) at NzbDrone.Core.Download.FailedDownloadService.GetHistoryItems(List
1 grabbedHistory, String downloadClientId) in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Download\FailedDownloadService.cs:line 127
at NzbDrone.Core.Download.FailedDownloadService.CheckHistory(List1 grabbedHistory, List
1 failedHistory) in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Download\FailedDownloadService.cs:line 100
at NzbDrone.Core.Download.FailedDownloadService.Execute(CheckForFailedDownloadCommand message) in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Download\FailedDownloadService.cs:line 170
at NzbDrone.Core.Messaging.Commands.CommandExecutor.ExecuteCommand[TCommand](Command command) in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 117
at NzbDrone.Core.Messaging.Commands.CommandExecutor.PublishCommand[TCommand](TCommand command) in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 48
at CallSite.Target(Closure , CallSite , CommandExecutor , Object )
at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid2[T0,T1](CallSite site, T0 arg0, T1 arg1)
at CallSite.Target(Closure , CallSite , CommandExecutor , Object )
at NzbDrone.Core.Messaging.Commands.CommandExecutor.PublishCommand(String commandTypeName) in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 54
at NzbDrone.Core.Jobs.Scheduler.ExecuteCommands() in m:\buildAgent1\work\328d72309b633a8\src\zbDrone.Core\Jobs\Scheduler.cs:line 56