Return of Reckoning

Error starting: System.IO.FileNotFoundException: Could not find file 'C:\Users\Owner\Desktop\WAR.exe'.
File name: 'C:\Users\Owner\Desktop\WAR.exe'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access)
at RoRLauncher.Hash.GetMd5HashFromFile(String fileName)
at RoRLauncher.Client.patchExe()
at RoRLauncher.Client.Handle(PacketIn packet)

You have to put the RoR launcher inside the WAR folder and close torrent.
If that doesn't work, try moving the entire folder to another location.