fatal error

i am testing autoblog on http://www.1minutesite.com (other posts come from autopost feed system) with the sethgodin feed but i got this

Fatal error: Call to undefined function switch_to_blog() in /mounted-storage/home36b/sub004/sc29325-WELZ/1minutesite.com/wp-content/plugins/autoblog/autoblogincludes/classes/autoblogadmin.php on line 708

is there any setting i have to perform? or ...

thnx for your support