I got this error message: "Your app information could not be saved. Try again. If the problem persists, contact us.

Hi,


On the Itunes Connect pannel:
When I upload screenshots, then I press "save". And I got this error message: "Your app information could not be saved. Try again. If the problem persists, contact us."
I tried with .png, .jpg, other pictures...etc!! Nothing work. If I make another change (uploading new picture) I can save it.
I tried with safari and chrome.