Just in case other people are were getting this same warning
warning: curl_setopt() [function.curl-setopt]: CURLOPT_FOLLOWLOCATION
Around line 354 in cafepress-widget.php replace curl_setopt($ch, CURLOPT_URL, $url); with:
if(ini_get('safe_mode') || ini_get("open_basedir")) {
curl_setopt($ch, CURLOPT_URL, $url);}
And around line 362 in cafepress-widget.php replace curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); with:
if(!ini_get('safe_mode') && !ini_get("open_basedir")) {
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);}