gaps problem on Full Android 5.1 on Shield TV v.1.8

hello i installed Full Android 5.1 on Shield TV v.1.8 on my 16gb shield tv following the tutorial on
http://forum.xda-developers.com/shie...t/rom-t3138575
everything gone flawlessly , my shield was 1.4
but after instaling the gaps google play service stop at boot.
i installed Gapps for CM 12.1 for 5.1 arm64 version stock
from http://opengapps.org/
i have no way to add an account.
could you help me please
thanks you.