As a logged-in user, visit http://commons.wikimedia.beta.wmflabs.org/wiki/Special:UploadWizard
UW never loads, just shows a spinner.
Javascript error is :
Uncaught Error: Unknown dependency: schema.UploadWizardStep bits.beta.wmflabs.org/commons.wikimedia.beta.wmflabs.org/load.php?debug=fal…%7Cmw.MwEmbedSupport&only=scripts&skin=vector&version=20140518T101426Z:166
Version: unspecified
Severity: major