Thread:Project:Support desk/Urgent: Thumbnail not working in MediaWiki 1.19/reply (2)

Thanks for your quick reply.

I tried chmod 775 and 777 for the images folder (and all subfolders) but it still didn't work.

My webspace is configured in such way that PHP errors are displayed on the screen directly - but I get nothing except a error message from MediaWiki (in German: "Fehler beim Erstellen des Vorschaubildes: Die Miniaturansicht konnte nicht am vorgesehenen Ort gespeichert werden", in English: "Error creating thumbnail: Unable to save thumbnail to destination").

If you read the mentioned thread you will see that there's a problem with a temp folder - the first offered fix didn't work in my case, the second one is within the 1.20 branch and I don't know if I can use it with 1.19.1? And if yes, how to use it since there's a new variable...