I just report this in case devs are interested to know it
I changed policy and tried to Publish them. Windows progress mouse icon started spinning and SmartConsole silently crashed. I started it again and tried to Discard the change. It would not say anything but not discard it either. Then I tried to publish again and this error appeared.
I did one more change and tried to Publish and this time it worked and change was published.
Thank you for sharing.
Did you open an SR?
This happened only once and is not reproducible so I decided there is not much sense to waste TAC's time. I posted it if R&D can "guess" what eventually went wrong. But if it happens second time I will surely open SR because then it will become a problem and not incident.
Unfortunately, this is one of those issues we'd need to gather some more data on to know the exact cause.
Retrieving data ...