We think we've fixed the tech problems, but in order for you to get rid of them, you'll need to dump your cache and your cookies and restart. It will probably work to restart your browser, but I went whole hog and restarted my machine.
Both my Safari and Firefox appear error free now!
edited to add: other people are reporting issues. So, we're still working on this. But right now, emptying your cache, cookies and restarting is still a great idea!
edited to add again: We think we've found the fix! But, problems might persist if your cache and cookies predate it - so definitely clear out everything!
Thanks for your patience, everyone!