Return of Reckoning

Hey I was having problem with an update so does anyone know how to fix?? Error Downloading HTTP:
System.UnauthorizedAccessException: Access to the path 'C:\Warhammer Online - Return of Reckoning\WAR-64.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)
at RoRLauncher.Client.y9HFHrOdkl1QC0H6sPS(Object , FileMode , FileAccess )
at RoRLauncher.Client.poKbCF9YeU(Object , Object )

Hello, please move your installation folder and add it in another one, for example:

C:\Games\Warhammer Online - Return of Reckoning

Then right click on that folder and make sure "Read Only" is unticked.