But this time it at least appears in the plugin section of Plus!
Doesn't work, though.
Edit: So I deleted the offending file and reinstalled. No luck this time either, but no error message, of course. This plug-in simply does not work for me.
Edit 2: I talked Tillman (my co-translator) into installing it.
Result 1: He got the ads back
Result 2: Tillman very angry now
(and he's from Motala, so beware ...)