No shake, and the setting for admin shakes is locked

On the Handshake Settings / Miscellaneous (admin/user/nf_handshake_settings) page there is an option to "Exclude user 1 from handshakes" and "Exclude users with the administer handshakes role from handshakes." Every time I un-check the checkbox next to either, it re-checks the boxes when I click Save Settings--and indeed, admin cannot shake. However, I removed the Administer Handshakes permission from a test account and there was still no option to shake. It's possible I'm missing something--where/how does a user initiate a handshake? there's no option that I can find--but it's more likely I think that Handshake is incompatible with something that's preventing any user from using Handshakes at all. Thoughts?