Empty boxes on my friends firefox

[baiaz]

Hi

I have just installed Adblock plus for my firefox on my mac. I recommanded my friend to do the same. On facebook on my mac it works fine.. but on his facebook on his mac there is empty boxes where the adds used to be. How can he get wrid of them?

[Hubird]

Most likely a subscription problem.

He probably has no element hiding rules, probably should remove his subscription and choose again (more carefully ). Face book works fine here.