Avatars for Multisite Plugin - Profile Pictures Gone Missing

Hello,

As of 6/22/15, it was noticed that many of our user profile pictures on our multisite, https://ds.lclark.edu/, have gone missing. In trying to solve this issue, I wanted to contact you to see if you could help find out if the plugin, "Avatars for Multisite," might have anything to do with this problem. Any help recovering these profile images would be much appreciated.

Thank you,
Nate