Working with FF 57.0.2. (64 Bit)

Searching for broken or unavailable links:

The AddOn found many broken links very fast. But the process stopped 1 link before the end and stays there endless. Process doesn't finish.

Searching for duplicate links:

The AddOn doesn't show any duplicate links, but starts to delete links without my confirmation. A look into the FF bookmark backups showed me, that there where really nearly 100 bookmarks deleted.
So I closed the tab of the AddOn hoping this will stop the process. In this moment FF crashed. After starting FF again, ALL my bookmarks were lost.


I hope you understand my rating. I deleted the AddOn for now.
It's a pitty because FF seems not to able to created an integrated bookmark organizer. So i still hope you get this AddOn work bug free.
My best wishes for that project.