Here is how I use Scan and Dropbox to sync compiled personal books, but it does not seem to work any more:
1. Build a PB on laptop
2, Take completed lbspbb file and put it in a folder under Dropbox, which will sync to my other computer
3. On desktop computer, Click a button on my toolbar that is SCAN C:\Users\Awalt\Dropbox\Compiled PBB Files
4.Restart desktop computer
At this point, the new PB file is recognized in the LIbrary and can be opened and used.
But now, no matter what I seem to do, the new file is not brought into the system with Scan. I thought maybe a bug creeped in that could not handle the multi-word folder name "Compiled PBB Files", so I moved just that one file into an otherwise empty folder C:\Temp, and that did not work either.
The last time I used this technique was April or maybe May, I am on 5.0b SR-4