Hello,
When you upload a picture, it will take sometime to
transfer the data and display the webpage. You should
make sure not to stop (or move to another page) your
browser until it's realy finished.

Now there may be problem depending on which browser
you use, what provider and if you use a proxy or
not : We are using the PUT method to transfer a
file to the server but it's not always implemented/
supported correctly. (if at all).

Cheers,
Yann Stettler