Unity 5.5.1p / 5.5.1f HELP unity freeze when shader are in building

hi guys, i am updating my app from unity 5.3.4 to unity 5.5.1p and during building (android,pc,ios) unity freeze. I sorted out it was the shader compiler so i have unchecked the standard shader in Edit > Project Settings > Graphics. In this way it’s works but i want keep this shader. how can i do ? thank you

Shaders building for the first time can take a while since there is no shader cache. Can you try again and check if it is truly freezing and it’s not just a lot of unnecessary variants being compiled?