Hi areese,
the workaround hasn't been necessary for about a week now - the trouble since then has been different.
In any case, I recommend stopping BOINC, installing the app_info.xml, starting it up again and letting it do its thing; right now, everything works (I verified it on one of my machines, all have the app_info.xml active again). To speed things up, you can choose "retry communications" from the extras menu.
HTH,
Simon.