I did a fresh installation of BriskBard portable. When I tried to download a file, I got a Couldn't download - Download error message. (This not the message related to executables being harmful.)
When I click on the download folder icon, it shows the expected folder. But when I look in the Configuration, it is showing a non-existent folder, which I presume is why the download failed.
With a fresh install, it looks like the Downloads directory is not being correctly set.

