Default [Q] Google Hangouts "Can't send this file" error for newly downloaded gifs.

in the last couple days both of my devices (moto x and lg g pad 8.3 gpe) haven't been able to attach gifs that have been downloaded after a certain date. i think this problem started saturday or yesterday so any gifs saved AFTER one of those days won't attach into any hangout. everyone else in the hangout can attach gifs.

i can attach and send gifs to hangouts on my computer but if i do it on my phone or tablet i'll get the message "Can't send this file" on the bottom of the screen. has anyone else encountered this problem?