Campaigns I try to save don't load list of followers

For every campaign I try to save, I get the message, "There don't seem to be many people that meet your search criteria. This could be because the filters are too specific and filter out too many people".

This happens for every campaign I try to save.  I think the message is incorrect because I get the message no matter what campaign I attempt to save.  I've tried 5 different campaigns so far.  This started today.