Thread:Extension talk:MultiUpload/Does not work with 1.18/reply (5)

Cavila, this might be due to the fact of creating ResourceLoader in 1.17 which supposed to make JavaScript developing easier and it only made it much complicated or even impossible or at least impractical in some use cases (see Bug 27488).

I'm using this extension and I could probably fix it for new versions of MediaWiki but I simply cannot upgrade to the latest version.