Google oauth: https://www.googleapis.com/plus/v1/people results in 400

Hi,

I'm trying out the spring Social Google (latest) against 1.1.0.M1 and since I'm getting a lot of duplicates against the contactOperations api, I'm trying the personOperations API. However, I keep running into a 400 error when I try to retrieve

PeoplePage contacts = go.personOperations().personQuery().fromPage(nextP ageToken) .maxResultsNumber(max).getPage();

I have just activated Google+ API on my Google API Console and deleted previous access grants from the associated email account.

Any ideas what could be going wrong?

Cheers,
Marc