I index an external directory and at a later point, I add files to the directory in Finder. In order to get access to the files in DEVONthink, I try to update by using the menu File->Update Indexed Items but nothing happens in DEVONthink!!
Have you emptied the database’s trash first?
No. Is there any connection?
If you have the indexed items in the Trash, you won’t be able to add them by updating the indexed items as they already exist in the database.
Check the Trash for them.
Note: If you empty the Trash, it’s possible the files will be moved to the system Trash in the Finder. Please read Help > Documentation > In & Out > Importing & Indexing > Indexing and the filesystem for more information.