I'm having the same issue with Windows 10. I have 7zip installed. It's the 64-bit version. Once the torrent finishes it creates the folder but never actually extracts the archives.
Can I give you a debug log or something? Thanks in advance.
I also put it in my path environment variable just to see if that was the issue and it didn't make a difference. It is working as I can open a command prompt and type 7z it runs.
I tried running deluge this way: deluge.exe -L debug -l .\debug.txt
but it doesn't actually open the gui and run. What am I missing?
Can you be more specific about how you are trying to run deluge, although it might be a path issue. You can use deluge-debug.exe which will actually output to the console.
Here is the debug output when the torrent finishes downloading:
[ERROR ] 07:51:11 eventmanager:59 Event handler TorrentFinishedEvent failed in <bound method Core._on_torrent_finished of <extractor.core.Core object at 0x043EB9D0>> with exception (2, 'CreateProcess', 'The system cannot find the file specified.')