Transfer failed [1] : Not logged in. (How did that happen?)

[Cornelius Kibelka]

Out of nothing I'm getting this strange error message, but only on some of the photos I'm wanting to upload.

It's not an OAuth problem, as always authorise before I'm upload photos (to avoid OAuth problems). It's nothing about duplicates, as those photos are new. And it's neither something about not logged in with my user account on Commons, as far as I can see.

Help me! :)

[Steinsplitter]

Works not? If no, which browser do you use?

[Magnus Manske]

Resolved with new tool version.