First of all, thank you everyone for your patience the last couple of days while we migrate to the 123D log in! We've pushed a fix that has corrected the main issues you were all facing yesterday:
1. STL Uploads in the editor are timing out.
2. Some users were locked out of their account.
STL Uploads in the editor are timing out.
Got it - the last fix should have corrected that. It may take a bit longer than usual, but upload away.
(More importantly) If you were locked out of your account, the migration process will now allow you to reclaim your original Tinkercad account. We added another big dialogue on the front page, but just follow the same instructions in our first post. I've tested it on my personal account, and it worked fine.
Let it think for a minute, then you should get a message when it succeeds.
Thanks again, and a sincere apology for the Penguin-poop storm yesterday. We are that much closer to that-infrastructure-that-you've-been-asking-for-but-we-can't-really-talk-about, so stay tuned for more updates.
If you have any more troubles, please email us at firstname.lastname@example.org.