error after starting the launcher

[pipelon321]

Hi. After starting the launcher I get a window with this error: ata.myp:
System.Exception: You need to stop application currently using the following file: data.myp
    at MYPHandler.MYPHandler.WriteFileToArchive (FileInArchive archFile, MemoryStream MS)
    at MYPHandler.MYPHandler.ReplaceFile (FileInArchive archFile, FileStream newFile)
    at RoRLauncher.Client.UpdateWarData ()

[Draugris]

Try to start the launcher as adminstrator and clear the read only flag from your game folder if set.