qBittorrent official forums

Just as the subject says, all I did was update--no other changes--and I can't add a torrent or magent by any method.

Not from search, not from the file menu, not by dragging and dropping. No activity on current torrents either.

I downloaded Transmission and it works fine.

Tried to downgrade to 4.5.5, but it wouldn't even open, spinning beach ball until force quit.

Tried 4.5.5 again and it opens now. I can add torrents but they don't download--they stick at "downloading metadata."

I have no direct help for you but am here to say I've seen elsewhere folks reporting they're fine with qBittorrent on Sonoma - no idea what versions of qB. I would suspect older versions. Seems like most folks stay one or two behind newest. I know I do (haven't gone to Sonoma yet, myself).

So, hang in there!