I am adding the new Google+ [signin](https://developers.google.com/+/web/signin/) button to my app and having some problems with making authenticated calls. I have included the html and javascript as described in the docs and the signin works. I have can even see the access token. However when I make a request to an authenticated endpoint I get an "invalid credentials" response. For example I am attempting:

gapi.client.oauth2.userinfo.get().execute(function(resp){console.log(resp);});

I can make this call if I use the regular google oauth methods ( gapi.auth.authorize()).
What is going on here? what am I doing wrong?

I am requesting the userinfo.email and userinfo.profile scopes with the google+ button.

Html for G+ signin:

```
<span id="signinButton">
<span
 class="g-signin"
 data-callback="signinCallback"
 data-apppackagename="com.mypackage" 
 data-clientid="myclientID"
 data-cookiepolicy="single_host_origin"
 data-requestvisibleactions="http://schemas.google.com/AddActivity"
 data-scope="https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/devstorage.read_only https://www.googleapis.com/auth/plus.login">

```

js included for G+ signin button(just before ):

> 
>  
>  (function() {
>  var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
>  po.src = 'https://apis.google.com/js/client:plusone.js';
>  var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
>  })();
>  
> 

callback for G+ button:

```
function signinCallback(authResult) {
  if (authResult['access_token']) { 
    signin();
  } else if (authResult['error']) {
     console.log('There was an error: ' + authResult['error']);
  }
}

```

Request for userprofile:

```
gapi.client.oauth2.userinfo.get().execute(function(resp) {console.log(resp);});

```

The request includes the Authorization header with a token(seen through chrome dev tools).

Update:

I have also attempted using gapi.auth.authorize() in immediate mode. This did not work for and returned a null response. When I ran this with immediate mode set to false, I was presented with the authorization prompt (again, after authorizing with g+ button). After this my authorized calls worked. Below is my code:

```
gapi.auth.authorize({client_id: 'myClientID', scope: 'https://www.googleapis.com/auth/userinfo.email https://www.googleapis.com/auth/userinfo.profile https://www.googleapis.com/auth/devstorage.read_only',
                immediate: mode, response_type: 'token id_token'}, callback);

```