When uploading/inserting SoundCloud is Gold html 5 player - I get "404 - Oops! can't find that playlist"although the URL in the upload/insert dialogue is correct, and indeed works when I click on it.
I get the same alert if I try to select playlists (sets) that I already have posted, and which are working fine.
It also works fine on my other site.
I want to try re-installing, but if I do this, will I have to re-do all my existing uploads?