Index reference files on Dropbox and sync two Macs?

Christian, may I assume from your answer that the problem is the syncing, not in storing the folder with the indexed references on Dropbox?

I found the following from korm in the forum, “Your files that are indexed into DEVONthink but not stored inside a database are kept in whatever folder hierarchy you organize. These files could be located in Dropbox, Box, or other cloud repository …”

Would a direct sync (mac to mac) work?