Cant make FRD work (Linux Mint) (7 replies)

Hi.

I've been using FRD for years on Linux Mint 17.3 with no problems at all. Couple days ago I installed Linux Mint 21.2 and can't make FRD work. When trying to check for new plugins I got "javax/xml/bind/ValidationEventHandler" error message. Without updating plugins I am not able to add any urls from ceskatelevize.cz. That ValidationEventHandler has got something to do with Sun Java I guess but before I start removing current Java on my system and installing Oracle Java, which I dont need for anything else than FRD, I tried this:

On another computer with Windows I unzipped FRD, exceuted it, checked for new plugins, then copied VitySoft\FRD folder to .FRD folder on computer with Linux. It's possible now to insert ceskatelevize.cz urls for download because all updates are in plugins folder I have from Windows. But download doesnt start and I get this error message: ERROR-cz/vity/freerapid/plugins/services/applehls/AdjustableBitrateHlsDownloader

Can be this solved to start downloads and finally get FRD working?