This happens with a completely clean installation of mIRC...
Hi guys, i fixed this problem and Chrome -> save as fixed too.
In my case, problem was detected in some adware, installed in system as extension of Chrome and may be other. In some times, I see in Chrome pages Tdsrmbl.net/*...., but I don't open this. After googling, I found info about this:
http://www.averina.com/how-to-remove-tdsrmbl-net-adware/I used adwcleaner from this page (and some page's in search writing about this tools) and after reset see running mirc :-)
May be, your problem also in adaware?