I’m having the same problem: everything up to date but that line of code keeps getting added to the index template (and no where else I can find). I just turned off write permissions for the index file, but am a little worried about how what the exploit is that lets it in in the first place.
I’m also experiencing this problem — just installed it specifically to set Category title tags, and it appears that it cannot do that.
Does anyone know of another plugin that will allow you to set titles for your categories?