I used for long time the plugin but now that I have update wordpress is not showing up anymore in the Post admin and also in Post overview column.
So I read the other threads and updated your plugin right away, but nothing happens.
I have a network multisite and I tried to do the network activation, then I tried to just activate in one site, finally I deactivate and activate the plugin but still not working.
My concern is that some other plugins may not let it work, what do you think?
p.s. if it can help in old posts admin I toke a look at custom field and the expiration-date is not registered, but if I want to add a new custom field it shows up in the drop-down