Yes, it seems to be the same issue with the pre-uploaded pictures — default package, for some reason, is missing the Avatars option.
Maybe because it's actually a strict option if you'd like to use it in the Mobile Layout — your avatars all should be static size and not more than 50x50 px, I suppose. Else they won't fit the Mobile screen. Also, the same Avatars then would be used for a Desktop version — there's no distinction in them on the script level.
I will update it in the default package ASAP in the nearest days; need to test some more things before it's released. I'll send an updated version of the template to your email address shortly. Thanks for making a note on this.