Ah ... yes ... that will be the conflict. Hmm well I guess we can forget the magnet links. When you open LW, does it ask you anything about being the magnet handler? It's not important now.

Do you run bittorrent at the same time as LW? It's generally not recommended! If you do, that may be why the magnet handler situation is not working.

Well all I can suggest is you keep trying more files to downld, also try varying your search terms so you may find the identical file but under a slightly different name. And it may be reliable.