Android packaging error .smali[0,0] null

Hi,

i'm packaging an android version of my app and i'm getting this error:

(...) \out\com\google\android\gms\internal\zzku$zza.smali[0,0] null

it looks it is related to some native extensions.

Anyone had this before?

I'm using windows 10, air 21.

Cheers,

Vasco