This caused by the filter "/adverts/*" (which is added by the subscription "Liste FR (France) + EasyList", and probably with others too).
The solution is to deactivate that specific filter or, on the site owner's side, would be to send the page with content type "text/html" (interpreting code as XHTML is *not* recommended, as any problem with the code will abort the rendering and just show an error message) or renaming the adverts/ folder to something else.
THE REAL PROBLEM?
I'm not sure why this is actually happening, I'll see if I can have a better look at it. I'll also update the adblock-plus package, but I won't have time to do so until the end of the month (I'm leaving for holidays tomorrow).
HOW TO FIX THIS:
This caused by the filter "/adverts/*" (which is added by the subscription "Liste FR (France) + EasyList", and probably with others too).
The solution is to deactivate that specific filter or, on the site owner's side, would be to send the page with content type "text/html" (interpreting code as XHTML is *not* recommended, as any problem with the code will abort the rendering and just show an error message) or renaming the adverts/ folder to something else.
THE REAL PROBLEM?
I'm not sure why this is actually happening, I'll see if I can have a better look at it. I'll also update the adblock-plus package, but I won't have time to do so until the end of the month (I'm leaving for holidays tomorrow).