I'm having a similar issue: I want to add 'Cluffy Flouds 1' & 'Cluffy Flouds 2' by Mark "TDK" Knight to my channel called "Like Cyberspeed Soundtrack (MINE)" as seeds, but it either won't save(just briefly shows the loading circle-type icon/gif) or gives me that "We're having unexpected technical difficulties" error with the 'ok' button(as if such a thing would EVER be 'ok'🙄), depending on how I go about trying to add 'em. It won't even let me start a channel from the song(s)!!!🤨 Same error! Out of curiosity, I tried to add a DIFFERENT artist(just picked a random from the list of recommended that pops up on the 'add variety' page) & it WORKED! 🤯 Here's a screenshot of the error: I don't understand why it won't let me use these songs. 😑  Any help therewith will be greatly appreciated! 😁 ... View more