I've been trying to get it to work but after a wile I get this "An unhandled error has occurred. Reload". I do have a large ammount of songs and I can see that it's still using my cpu and gpu. But it's been active for over 8 hours and I haven't seen any changes. Not sure if this is just my system or if any others have seen it.
I first want to clarify that I have a crap load of songs and a decent amount of playlist which is most likely the cause of the problem.
After doing a fresh install I decided to choose an empty/new directory for the beat saber installation to see if adding a few songs at a time could help. I ended getting some progress with that idea. I was able to load up to around 600 songs when imported in chunks manually to that said directory, but after that no new songs were detected when I refreshed. I also noticed that some playlist would just stop the whole thing from working, The playlist that would break the application changed each time I put them in, so I'm not 100% sure if it would break from how/what created the playlist or how many items/tracks were in said playlist.
From a user: