Return of Reckoning

i downloaded the game for turrnet and when i run the luncher i get this error
Error: System.UnauthorizedAccessException: Access to the path 'D:\Warhammer Online - Age of Reckoning\art.myp' 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)
at WarZoneLib.MYP.B5lsDurUKp7MXnmEEd(Object , FileMode , FileAccess )
at WarZoneLib.MYP..ctor(String fileName, FileAccess access)
at WarZoneLib.MYPManager.Get(MythicPackage archive)
at RoRLauncher.Client.HknXgX8I1CQ3FVY7npS(MythicPackage archive)
at RoRLauncher.Client.Handle(PacketIn packet)
at RoRLauncher.Client.IkaEZ48iD826NFTu0BH(Object )
at RoRLauncher.Client.OnReceive(PacketIn packet)
at RoRLauncher.Client.rSN1Kf8QdDryQ7nW8sU(Object )
at RoRLauncher.Client.YFLZyjs0vm(Object )

Same here. Any Tip?

New video guide covering that part. Just mark all downloaded files and directories and remove Read Only protection!

does not help .

also is it okay to WIndows Def. to go crazy ? saying that files contain virus ?

Your Windows Defender might prevent access to some of your files and therefore cause your problems.
If you downloaded the client via the official download channels, you should be fine.