Having upgraded to the new Sky go app and sufferening the PFE 12000 error i did some reserch online and found the following way around the problem of watching live on my laptop.
1. Connect mobile phone to laptop and enable hotspot so laptop thinks its hard wired
2. Launch Sky go and select what you want to watch
3. Once program is running disconnect phone from laptop to revert to wi-fi and the program will continue to run
4. You can then swich between programs as you wish and the app will continue working