Background info…
v2.1.1
OSX 10.8.4
Not running any anti-virus or similar applications
I’ve logged in online with Facebook, and I can see my account page. When I try to log in with Facebook with the client, it tells me “It appears your Facebook account has not been linked to a WhatPulse account yet…”
I’m not sure what’s going on 
It looks like the client was not prepared to handle accounts without computers and said your account didn’t exist because you have no computers. I just fixed that with a message informing you to add a computer before logging in.
Do so via http://whatpulse.org/my/#computers
Ahhh ok thanks. I looked at the computer page, but the wording lead me to believe I only needed to add a computer if I had multiple devices syncing. Thanks 