Permission Problems with Déjà Dup

When trying to back up my system, I get the following error. I know that there is something going on with permissions but I just do not know exactly what that something is. Will someone please help me? Here is the error:

Giving up after 5 attempts. Error: gdata-service-error-quark: 
Authentication required: 
{
 "error": 
  {
  "errors": 
  [
   {
    "domain": "global",
    "reason": "authError",
    "message": "Invalid Credentials",
    "locationType": "header",
    "location": "Authorization"
   }
  ],
  "code": 401,
  "message": "Invalid Credentials"
  }
}