Hi Red-
The LayOut autosave files are now in a different location: when I run v3.0.16845, the autosave files are placed in /var/folders/x4/q40x3v7d23j7d3vywjt6cb65mkwh3m/T/com.google.LayOut.mdurant/ and each file has a directory name of the form LAYOUT.bG3O7S. Obviously the name of the "q40x3v7d23j7d3vywjt6cb65mkwh3m" folder is likely to be different on your machine!
However, in theory you shouldn't have to manually recover these files from the temporary location - they should appear in the "Recover" tab of the "New File" dialog when you start LayOut. If the "Recover" tab isn't visible (just "New" and "Recent") then LayOut hasn't found any recoverable files. Is this happening to you?
thanks,
Marc