Thank you all for your prompt replies and advice. I have zero expertise in software, as an admin for the forum I thought that just following the instructions to upgrade will work. In any case, hopefully we’ll be able to fix this and next time I’ll know better what to do.
I asked one of our DO admins to run the launcher rebuild app (per Jay’s message). If he cannot fix it, I’ll ask for help again. In any case, I’ll let you know what worked, so it helps others.
I like your software and the whole idea of Civilized Discussion. We’ve been using it for more than 5 years with few glitches. I hope this problem can be solved fast.