Hi,
I’ve also run into this issue. After you authenticate your twitter account, the plugin sends you back to the callback url, which displays a blank page.
Upon further inpsection, the blank page includes the following code:
<html>
<head>
<script>
function init() {
window.opener.wp_social_connect({'action' : 'social_connect', 'social_connect_provider' : 'twitter',
'social_connect_signature' : 'e13e4344e6c2b8f57e0f5ad7c347f859cb42ddc3bd9e676f76519de56b3611f0',
'social_connect_twitter_identity' : '107372510',
'social_connect_screen_name' : 'twmaffun',
'social_connect_name' : 'Bill Edwards'});
window.close();
}
</script>
</head>
<body onload="init();">
</body>
</html>