It seems any site with the word \"pop\" in the beginning of it is blocked - I haven\'t checked if \"pop\" is blocked in the whole of the hostname. So popsugar.com is blocked. So is popoholic. I tried to edit out the line I thought was the culprit but it actually broke the entire PAC file. It was:

var re_adhost = /^(www\\.)?(ad(?!(ult|obe.*|min|sl|d|olly.*))|tology|pop|click|cash|[^.]*banner|[^.]*adserv|.+\\.ads?\\.)/i;

Any solutions?

Just removing four characters, namely "pop|" without the quotes, works for me.
My re_adhost:

var re_adhost = /^(www\.)?(ad(?!(ult|obe.*|min|sl|d|olly.*|block|don))|tology|click|dclk|cash|[^.]*banner|[^.]*adserv|.+\.ads?\.)/i;