Is it just me or is everyone getting an internal error popup whenever they try to make changes to their game? It's been like this for a few hours. Do I just wait for it to resolve itself?

Are you just trying to make the same change?

It could be that the server was down. Or it could be that it's failed to save once and got out of sync with the server, in which case you'd have to refresh the page to make it work again.

But for me, "internal error" most often means I've tried to leave code view while the code contains a string with a < character in it. The web editor can't cope with that.