All downlods are gone from the app

[HMR]

Hi,
Question's in subject,
Desktop has hanged, had to restart it manually. After that, I don't see a single download in qBittorrent app, anymore. Everything is blank in the main app window, and everything is 0 (zero) in the left panels.
The downloaded files and torrents are still on in the same folders as they were. Settings are set up to those folders' paths, too. Files exist, but qBittorrent app just does not see them, somehow.
Can you help me to fix it?
Used to use 3.3.16 portable version, changed to 4.1.0 portable. Thought it'd help but no.
Windows 7 x64
Thanks!!

[sledgehammer_999]

It might help if you first used 4.0.4 and then 4.1.1