After encountering problems opening NetTV, I've bought a new router. Unfortunatly this didn't solve the problem. The TV didn't recognise new software. So I thought I had the latest installed. This wan't the case after a search on internet I saw ther was a newer version, which I dowloaded and put on a USB stick and in the TV. After instaling and restart NetTV worked instantly.

I'm happy NetTV is working again, but I not pleased that the latest updates aren't installed / found by the TV.