Everything else is working fine on my computer. I've restarted it, I've restarted Firefox, Firefox is updated, I reinstalled Adobe including using the removal tool....everything is up to date.
I fell asleep tonight while watching something on TV. When I woke up, YouTube wasn't working. Here's a screenshot I took of the problem:
It wasn't like this a few hours ago. It's suddenly in a "list" format, which has only happened very briefly at times in the past, before opening completely in proper YouTube.
What's going on, and how do I fix this? YouTube is a very active site for me.