[TYPO3-mvc] unable to replace object in repository...

[Florian Staudacher]

Hello list!

I hope you can help me with a little problem:
I am currently writing a plugin using Typo3 4.4.4 and extbase/fluid 1.3.0beta2.
My problem is, that I am unable to update an object in the repository that is 
getting posted by a form.
Adding an object via the same form works flawlessly...

Here is the action that I have in the controller:

     /**
     * edit an Address of the customer
     * @param Tx_WhoozShop_Domain_Model_Address address
     */
    public function updateAddressAction(Tx_WhoozShop_Domain_Model_Address 
$address) {
        if(isset($this->me)) {
            $this->addressRepository = 
t3lib_div::makeInstance('Tx_WhoozShop_Domain_Repository_AddressRepository');
            $this->addressRepository->update($address);
            $this->flashMessageContainer->add('Your Address was updated.');

            return json_encode('OK');
        }
        
        return "You are not allowed to do this!";
    }

The $address is a valid object of the type Tx_WhoozShop_Domain_Model_Address and 
I can even look up the "old" object with
$this->addressRepository->findByUid(6);
but it doesn't get updated. In the Browser I receive the "OK" that gets 
returned.

Also, when I visit the page with the plugin, I get the following message, if I 
am not logged into the backend:
Fatal error:  Call to a member function getSessionData() on a non-object in 
..../t3lib/class.t3lib_flashmessagequeue.php on line 100
I assume that's due to the current beta status of extbase?

Let me know if you need more info.

Thanks!
Florian