UploadWizard currently errors out on the first screen. Error console with debug mode enabled shows the error "Undefined variable: UploadWizardConfig" is triggered in line 24 of mw.LanguageUpWiz.js. This is with Opera 12.15 on Ubuntu.
Version: unspecified
Severity: critical
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=48515