This is what I found in the log:
[DEBUG ] 17:28:49 core:175 EXTRACTOR: Extracting E:\archive.rar with 7z.exe x -y to C:\Users\prismra\Desktop\archive
[ERROR ] 17:28:49 eventmanager:59 Event handler TorrentFinishedEvent failed in <bound method Core._on_torrent_finished of <extractor.core.Core object at 0x04745D30>> with exception (2, 'CreateProcess', 'The system cannot find the file specified.')
Doesn't look like too extra information. I tried running the 7z command referenced in the log in the download directory and it extracted fine.
extractor not working with windows server 2012 ?!
Re: extractor not working with windows server 2012 ?!
Might be worth trying 32bit 7zip. That error is related to 7zip rather than torrent files.