I bought GTA 4 Liberty City couple of weeks ago, it was working till the weekend. When I insert the disc, it no longer loads. You can see the disc under the games menu and it will try to load the game, then gives error message 80010514

It then caused my other games for eg NBA LIVE 10 to fail. However, blu ray movies were working okay.
Have googled and have tried the fix of doing restore, (back up before doing this, as it will delete all content/settings)

This seemed to have fix the NBA live issue and is now playing okay. However GTA is still having issues and getting the same error message.

Anyone else getting this error message? or has anyone fixed it?