Return of Reckoning

I get the following error message when attempting to log in:

Error starting: System.UnauthorizedAccessException: Access to the path 'C:\Users\Joseph\Downloads\Warhammer Online - Age of Reckoning\WAR.exe' is denied.
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, FileShare share, Int32 bufferSize, FileOptions options, String msgPath, Boolean bFromProxy)
at System.IO.FileStream..ctor(String path, FileMode mode)
at RoRLauncher.Client.patchExe()
at RoRLauncher.Client.Handle(PacketIn packet)

Any help you can provide would be appreciated, thanks

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