Hello angryfatcat,
I'm sorry to hear you've encountered this issue. This is the first we've heard of this happening in the 4.0.2 upgrade. Before you downgrade, please attempt to enable remote access again, then send us a bug report by going to Help > Report a Problem so we can take a look at your logs. Be sure to include a link to this post so we know it's from you.
You can download older versions of Sighthound Video at any time by logging in to
https://www.sighthound.com/account/ and clicking the "Looking for a previous version?" text.
Regards,
-Devin