We've been getting reports from some users that they've been receiving error messages to their accounts after making recent changes to their avatar image, user image and profile background. We've even had some reports of entire profiles disappearing. The Higher-ups are currently working on a fix for this.
For the time being, refrain from making any changes to avatars, user images and backgrounds. If you have made any changes, DO NOT LOG OUT OF YOUR ACCOUNT!!! Do what you can to remain logged in until things are straightened out.
As always, any bugs encountered can be posted in the Feedback board. We'll keep you updated.