Not sure if it's the case here, but sometimes people just move on from DB. Sometimes for good, and someitimes for a long stretch. I haven't searched myself but hopefully you can find a download to the plugin here, or someone is surely to have it. I don't as I wasn't backing up my downloads folder, and had the same issue as you.
If there is some inner working or problem with a particular aspect of the DLL then perhaps someone who is here currently, can... or has done something similar.
Good luck.