Ironically enough, I've been using this plug-in with little problems on a MU installation for a month or so.
I decided to update to 2.3 and the first thing that I noticed was that the settings page was missing from the menu. I deleted and re-installed the plug-in and still can't find/access the settings page.
I looked at the code and found /wp-admin/options-general.php?page=NextScripts_SNAP.php but when I go to that page directly, I get:
You do not have sufficient permissions to access this page.
As a paid pro user, this plug-in is becoming increasingly more important to me. I now want it to handle tweets (though I think I might have to write my own support for YOURLS if you don't have it already) because Twitter Tools upgraded their plug-in and it's horrible now.