Yair,
took the weekend off and forgot about my problems, but it's monday now and they are still here. Started the same load problem, when I selected the folder to do a reshot. Came here read your response and shut the computer down, restarted it and put all the tiffs and jpgs in their own folder and LC11 loaded the 61 mos files in 20 seconds. Hooray!
I have been putting the processed tiffs in the same folder as the mos (raw) files for the longest time because I kept running in to a crash problem when I tried to select a new folder. It would work one day and the next three, crash, crash, crash. Now I have never had a problem with this (putting the mos and tiffs together) and selected four different folders this am. with mos, tiffs and jpgs - they opened fast, with no problems. It is only this folder with the cropped tiffs in them that is a problem.
Will try trashing the Leaf DB folder, maybe today, maybe tomorrow as I want to get on with the job.
Thank you,
Brian