Hi everyone! 
I’m new to Omeka, and getting to know it by the Sandbox 
One thing I’ve noticed, which seems odd:
It seems I am unable to upload any assets anywhere on the sandbox.
I can browse and select (eg a small image file, jpg/gif/png) - but nothing happens when I click on “Upload”.
Am I the only one experiencing this, and is this on purpose?
Thank you very much in advance!