This dialog is opened on the first database loading per application session, if not disabled:
Dialog content:
AccdbMerge is using Microsoft Access COM object to read database file object definitions. It means that it literally opens Access, Access tries to read database file and AccdbMerge takes from Access information about file objects. As a side effect sometimes you can see blinking Access windows and AccdbMerge can go to the background for a while during database loading. Or Access may ask you to confirm database open - please allow or deny the same way as you would open this file in Access. That's normal. Please don't close appearing Access windows if any and wait for loading completion - AccdbMerge will bring itself to the front at the end of this process.
Database object definitions merge and/or delete is performed in the same way using Microsoft Access with the same side effect.
If Don't warn me again is checked - this dialog is no longer shown.
