An error occurred while saving the commentMatthew Gore commented
Same thing happened to me. New install of Bridge 2020 and then 2021 on Windows 10, the Photo Downloader wasn't saving my settings.
Fixed the issue by going to my C: -> Users -> (my username) -> AppData -> Roaming -> Adobe
And then I had to create a folder there called "Bridge CC 2019" , even though I'm using Bridge 2020 or 2021 .
That's where the preferences are stored. Great work, Adobe! Same basic problem now dates back in version of Bridge for at least 6 years