Hello.
Last time I upgraded MW to 1.23.
After that I can't upload any files. I got that error:
Uploading files to this wiki is not enabled. Please upload to Wikimedia Commons.
To be able to use this special page to upload to this wiki, an administrator needs to add one or more license options to the page MediaWiki:Licenses.
Use the following format: * Template name|Label. Use any text to enable uploading without license options.
I also have MsUpload but after upgrading it disapere on editor.