How do I fix this commerce_auction_node_presave error message?
Change the code below :

 $node-&gt;auction_starting_price[LANGUAGE_NONE][0]['amount'] = $price[0]['amount'];
    $node-&gt;auction_starting_price[LANGUAGE_NONE][0]['currency_code'] = $price[0]['currency_code'];


with 

 $node-&gt;auction_starting_price[LANGUAGE_NONE][0]['amount'] = $price['und'][0]['amount'];
        $node-&gt;auction_starting_price[LANGUAGE_NONE][0]['currency_code'] = $price['und'][0]['currency_code'];