password protected entry not working in iframe

I tried to make a password protected entry today [http://complexfemme.net] and when i enter my password it just refreshes the page and askes for a password again. i cleared my cookies and cache and still nothing. if i load the wordpress index on it’s own [http://complexfemme.net/wordpress] it works perfectly fine the way it should. so i am thinking it’s just not working in the iframe. any ideas on how to fix this?

On my other website [http://thatchiq.com], i have and older version of wordpress installed and it also runs in an iframe and i have no problems with protected entries there. *shrugs* any help!?