New Users usually don’t have the right to upload Images. But as part of the new user tutorial @discobot shows the user a picture of a Unicorn and asks the user to upload a Picture he likes. So new users are usually not able to complete the Tutorial 
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New users at trust level 0 can upload one image to a post, unless you’ve changed the defaults.
Well, just finished the tutorial here … and it was the first interaction for me so I just wanted to give some feedback.
I was not able to upload an image 
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You’re right! I can repro this on meta as a new user. When uploading the image, I get
Could we assign someone to this bug @eviltrout?
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@jamie.wilson is this related to your latest changes? If not it’s probably fresh in your mind!
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Yup - that was a regression introduced by my recent changes. (Thanks for bringing it to our attention @Finis!)
I’ve made a commit just now which should address that error. It should get deployed here on meta shortly.
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WOW that was quick 
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