Description of problem:
It seems there is no way to enable sosreport permanently
You enable it in preferences, and then the next time you boot it's disabled again
Version-Release number of selected component (if applicable):
EnabledPlugins = SOSreport
in /etc/abrt/abrt.conf? Re-start abrtd and you can see that SOSreport in checked in abrt-gui -> Edit -> Preferences.
That the editing in Preferences is not persistent is other thing, though.
Well I don't think I care enough to try this (I'm quite ambivalent about cores); I just wanted to report the non-persistent bit
The feature of enabling/disabling of plugins via GUI has been removed in recent versions.