Error on "place my bid!"

I'm using the last version of commerce auction and when I tried to bid a product, it resultes the following error:

Notice: Undefined variable: node in place_bid_form_validate() (line 132 of /var/www/commerce_kickstart/sites/all/modules/commerce_auction_bid/commerce_auction_bid.module).
EntityMalformedException: Missing bundle property on entity of type node. in entity_extract_ids() (line 7501 of /var/www/commerce_kickstart/includes/common.inc).