You need to have root on your stock kernel/ROM.
1. Install root explorer
2. Modify build.prop in the system folder....(where it says amazon kindle fire 2 replace it with Galaxy Nexus, where it says android on the next line replace it with Google) exit and save and reboot.
3. Download ota rootkeeper and temp unroot
4. Download sky go and away you go.
As I said if anyone can get this to work on rooted custom ROM let me know
Edit.... BTW I'm not using a nexus its my kf2
Sent from my Galaxy Nexus using xda app-developers app