Little Problem with YouSayToo Recently2

I notice that recently it is slower to access YouSayToo (YST). And it frequently pops up a warning box telling that there is an error with the scripts whenever I switch to open other YST members' site (please see the picture below). I do not know whether the problem is with my browser or system settings or with the YST itself. I know there are many great changes and additions to YST now and maybe some of the changes still in progress and can cause a little bit problem. Can anyone tell me what the problem is? I hope this will disappear later because in fact I like YST as told in my old posting! I hope that YST will still keep its fast access though there are a lot of improvement in user interfaces and cosmetics. Go YST!