I installed the Google publisher toolbar today on Chrome and could not get it to work and after a lot of hit and trial it is now working fine. Earlier it kept on saying"The Google Publisher Toolbar requires you to be logged in to one or more Google Accounts." when I clicked the icon with an Allow button and after clicking the allow button I logged in again and it would still not work even after trying a few times so I thought there must be a lot of others who would need a solution so this is what I did:
I logged out of the Google account and closed the window> Opened Chrome again and opened an incognito window and hit the Google publisher toolbar button and logged in from there> Close all windows including the one you loged into and now open Chrome again and it should work now.
If you still cannot get it to work then post here and I would be happy to help resolve your problem.