Seeing the same on 2012r2 - failure to update from 3.0.1.367 to 3.0.1.368
19-2-8 12:24:51.7|Info|InstallUpdateService|Preparing client
19-2-8 12:24:51.7|Error|CommandExecutor|Error occurred while executing task ApplicationUpdate
[v3.0.1.363] System.IO.IOException: Cannot create a file when that file already exists.
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.Directory.InternalMove(String sourceDirName, String destDirName, Boolean checkHost)
at NzbDrone.Common.Disk.DiskProviderBase.MoveFolder(String source, String destination) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Disk\DiskProviderBase.cs:line 235
at NzbDrone.Common.Disk.DiskTransferService.TransferFolder(String sourcePath, String targetPath, TransferMode mode, DiskTransferVerificationMode verificationMode) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Disk\DiskTransferService.cs:line 70
at NzbDrone.Common.Disk.DiskTransferService.TransferFolder(String sourcePath, String targetPath, TransferMode mode, Boolean verified) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Common\Disk\DiskTransferService.cs:line 51
at NzbDrone.Core.Update.InstallUpdateService.InstallUpdate(UpdatePackage updatePackage) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Update\InstallUpdateService.cs:line 138
at NzbDrone.Core.Update.InstallUpdateService.Execute(ApplicationUpdateCommand message) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Update\InstallUpdateService.cs:line 236
at NzbDrone.Core.Messaging.Commands.CommandExecutor.ExecuteCommand[TCommand](TCommand command, CommandModel commandModel) in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 95
at CallSite.Target(Closure , CallSite , CommandExecutor , Object , CommandModel )
at System.Dynamic.UpdateDelegates.UpdateAndExecuteVoid3[T0,T1,T2](CallSite site, T0 arg0, T1 arg1, T2 arg2)
at CallSite.Target(Closure , CallSite , CommandExecutor , Object , CommandModel )
at NzbDrone.Core.Messaging.Commands.CommandExecutor.ExecuteCommands() in M:\BuildAgent\work\63739567f01dbcc2\src\NzbDrone.Core\Messaging\Commands\CommandExecutor.cs:line 41