Petko, whenever I try to tile two topics, I get the following message --
"'corr' is not a valid time and date"
-- and the program crashes.
I use "corr" as a tag in one of the topics (short for correspondence), but the message makes no sense to me. Has anyone else reported a similar problem?
P.S. I forgot to add that the problem is not peculiar to this one topic or this one tag. When I try to tile any two topics, I always get the message "[tag name or names] is not a valid time and date."
Petko, for the last day or two the tiling has been working normally. On the other hand, this problem has cropped up sporadically in the past. I assume that makes it harder to diagnose. I will let you know if I see any consistent pattern.