Using LRT4.7, the lastest download.
I've been using this version very successfully since I first downloaded it in May.
Tonight, 3 of 6 files I shot today load "jumbled".  Three of the folders are fine
When to try to preview those 3 folders I get images from all 6 of the folders and they just jump around from series to series.
I know the folders are fine because I can view them in Lightroom import.  I even imported 2 of the flies into Lightroom and LRT still can't read them correctly.
I'm stumped, been a very happy user for years, never had this problem.
Any suggestiions?

Probably something got wrong with the preview creation.
To fix it: Restart LRTimelapse. Load one of those folders, then "Shift-F5" to redo the previews. Wait until finished. Load the next Folder, Shift-F5.