setup Smartlist with Postfix - alias config problem

I am setting up Smartlist with Postfix, and put in /etc/aliases a line like: myteam: "|exec /home/smartlist/.bin/flist myteam" the test mail gets bounced with this error: cannot open input. Command output: flist: Can't find ".etc" in "/" Why it's looking for ".etc" under "/"? I do have /home/smartlist/.etc/ that's parallel to /home/smartlist/.bin/, and everything in ~smartlist account looks identical to my old smartlists. I wonder if it's a wrong error or something is broken somewhere? Zhiliang