"Script in Friends Who Listen is slowing Firefox down"

[dattrue]

Hi, as of today I've had the error message in the title come up in a yellow banner whenever I visit artist/album/track pages on Las.fm, with the page and browser becoming unresponsive until I pick the option to stop FWL running on the page. I've tried uninstalling and installing the extension and starting Firefox again. Any idea what's causing this and whether the problem is at my end? I love the extension and hope I'll be able to run it again soon.

[xxdavid]

Maybe it's due to the cache implementation…
Try the common trick of clearing the cache: go to Last.fm (with or without the extension), open console – Ctrl + shift + K (if you're using macOS, it's cmd + opt + K) –, type there localStorage.clear() and Enter.