Return of Reckoning

Hello everyone. I couldnt see anyone else posting this issue, except in german, so here it goes.
I have the following problem when i try to login>
AN ERROR OCCURED...
Error starting: System.UnauthorizedAccessException: Access to the path 'D:\CD-Images\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)

If someone is able to help me, please do

yes this is really a very very seldom topic in here. i think noone ever had that issue before you...