ProgrammingError, Flask with postgres and sqlalchemy

I am trying to get this setup to work, the database is created correctly, but trying to insert data I get the following error:

On sqlite:

sqlalchemy.exc.OperationalError
OperationalError: (sqlite3.OperationalError) no such column: Author [SQL: u'SELECT count(*) AS count_1 \nFROM (SELECT Author) AS anon_1']

On postgres:

sqlalchemy.exc.ProgrammingError
ProgrammingError: (psycopg2.ProgrammingError) column "author" does not exist
LINE 2: FROM (SELECT Author) AS anon_1
                     ^
 [SQL: 'SELECT count(*) AS count_1 \nFROM (SELECT Author) AS anon_1']

edit: Perhaps this has to do with it: I don't understand why it says "anon_1", as I am using credentials clearly?

I have inspected postgres and sqlite and the tables are created correctly. It seems to be an ORM configuration error, as it only seems to happend on inspecting or creating entries, any suggestion would be welcome!

class Author(CommonColumns):
    __tablename__ = 'author'
    author = Column(String(200))
    author_url = Column(String(2000))
    author_icon = Column(String(2000))
    comment = Column(String(5000))


registerSchema('author')(Author)


SETTINGS = {
    'SQLALCHEMY_TRACK_MODIFICATIONS': True,
    'SQLALCHEMY_DATABASE_URI': 'sqlite:////tmp/test.db',
    # 'SQLALCHEMY_DATABASE_URI': 'postgresql://xxx:xxx@localhost/test',
}


application = Flask(__name__)

# bind SQLAlchemy
db = application.data.driver
Base.metadata.bind = db.engine
db.Model = Base
db.create_all()

if __name__ == "__main__":
    application.run(debug=True)