Posting to Blogger returns a 403 Forbidden Error

I discovered the issue today as my daily Google Apps Script was not working.

I tried from the OAuth2 Playground too, without success.  
The OAuth token info URL returns me that though:

{ "issued_to": "283655246914.apps.googleusercontent.com", "audience": 
"283655246914.apps.googleusercontent.com", "scope": 
"https://www.googleapis.com/auth/blogger https://www.blogger.com/feeds/ 
https://www.googleapis.com/auth/blogger.readonly 
https://picasaweb.google.com/data/", "expires_in": 2827, "access_type": 
"offline"}

With :

POST /blogger/v3/blogs/422404653957324604/posts HTTP/1.1
Host: www.googleapis.com
Content-length: 237
Content-type: application/json
Authorization: Bearer … (token used above)

{
    "kind": "blogger#post",
    "labels": ["test"],
    "title": "Day 58",
    "content": "<div class="content">Test</div>",
    "selfLink": "",
    "published": "2013-09-11T16:19:01.169Z",
    "updated": "2013-09-11T16:19:01.169Z"
  }

And with this response

HTTP/1.1 403 Forbidden
Content-length: 208
X-xss-protection: 1; mode=block
X-content-type-options: nosniff
Expires: Wed, 11 Sep 2013 16:24:16 GMT
Server: GSE
Cache-control: private, max-age=0
Date: Wed, 11 Sep 2013 16:24:16 GMT
X-frame-options: SAMEORIGIN
Content-type: application/json; charset=UTF-8
Www-authenticate: Bearer realm="https://www.google.com/accounts/AuthSubRequest", error=insufficient_scope, scope="https://www.googleapis.com/auth/blogger"

{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "insufficientPermissions",
    "message": "Insufficient Permission"
   }
  ],
  "code": 403,
  "message": "Insufficient Permission"
 }
}

Any idea?

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