Up until a few days ago, okular would open and display postscript files just fine. Now, however, it just opens to a blank page. I can view the files in GIMP just fine, but that method is a bit cumbersome. Anyone have any ideas as to why this is no longer working? Is there a plug-in I need to update? Thanks.
I can verify that I’m observing the same. As a quick workaround, I subscribed to the printing repo, and upgraded ghostscript via that repo. This fixed the rendering issue.
Just to clarify that I now have ghostscript-9.20-84.1.x86_64 installed, (and ghostscript-x11 was upgraded to ghostscript-x11-9.20-84.1.x86_64 as a dependency). I will now disable the printing repo, as I don’t need other packages upgraded at the moment.
It would be a good idea to see if a bug report exists for this regression, and if not submit one.
There is one already:
http://bugzilla.opensuse.org/show_bug.cgi?id=1006592
In short, it’s a breakage caused by some security fix, that has been fixed upstream in ghostscript 9.20.
This not only affects Okular, but also Evince (which even crashes, here on 13.2 at least… 
), and maybe other applications.
You can easily fix it yourself though until an update is released:
Open the file /usr/share/ghostscript/9.15/Resource/Init/gs_init.ps in a text editor (as root), and change line#2024 to:
systemdict /getenv {pop //false} .forceput
(i.e. replace “put” with “.forceput”)