Return of Reckoning

Error: System.IO.IOException: The process cannot access the file 'C:\Program Files (x86)\Return of Reckoning\art.myp' because it is being used by another process.
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.My4TN1eHa1f2sAhYKEC(Object , FileMode , FileAccess )
at WarZoneLib.MYP..ctor(String fileName, FileAccess access)
at WarZoneLib.MYPManager.Get(MythicPackage archive)
at RoRLauncher.Client.JcsabLJZmMNUxmOb6Kk(MythicPackage archive)
at RoRLauncher.Client.Handle(PacketIn packet)
at RoRLauncher.Client.OmfoUCJhjT7sQWFldwT(Object )
at RoRLauncher.Client.OnReceive(PacketIn packet)
at RoRLauncher.Client.aVDAx2JYvQ7267th3Hp(Object )
at RoRLauncher.Client.Hnw1heD1Cx(Object )

it says there.. art.myp is being used by another process.

**How to Install:**

**+** Stop your Torrent from seeding (close it, maybe check your task manager)

**+** Move the Warhammer Online - Return of Reckoning outside the ReturnofReckoning-March2020 folder and move it to c:\ ... for instance move it to c:\Games
(but **NOT** inside c:\ Program Files or c:\ Program Files (x86); it should be in a folder which it have write access)

**+** Remove the write-protection from all the files in the Warhammer Online - Return of Reckoning folder.
(right click on the War Online - RoR folder > properties > disable the read-only box)

**+** Check that your whole Warhammer Online - Return of Reckoning folder is whitelisted in your Antivirus program and check if your Firewall or Maleware doesn't interfere with the install.

**+** You may also try running the launcher with Administrator privileges.
(Right click on the RoRLauncher.exe > properties > run administrator)

**+** Run the RoRLauncher.exe
**+** Let it update (sometimes it needs a few seconds until it starts)
**+** Exit launcher and rerun it again
**+** Repeat the last 2-steps until there is no update left
**+** Launch the game

**!!!** [If you don't have DirectX 9.0c, installed it is required, and now this is also included in the torrent. In the ReturnOfReckoning-March2020 folder find the dx90c folder, open that and run DXSETUP.exe]

is being used by another process....

... if it's a fresh install... close the Taskmanager (like Xpander wrote)
... check if you haven't already opened a second launcher/game
... you can try to restart your PC aswell