I have had A26 since it came out, but I made a purchase last night. Today the book downloaded, and the indexing has been stuck on "one minute remaining" for the last 12 hours or so.
(the book that downloaded was very, very small by the way.)
I had this happen after downloading A26. It reindexed and then got stuck with "one minute remaining." I solved (?) the problem by quitting Logos4, then launching Activity Monitor and using it to quit the Logos Indexer. I restarted Logos4 and haven't had the indexer start again.
I did just what you suggested, and you're right....it worked.
thanks!