basket doesn't work with experimental version ?

hi

I have a problem with the basket module since my update with an experimental verion. you can Try it... http://www.photo-equivogue.com/gallery/
it doesn't look like it was in the old version.. when you add a product to the basket it's not a pop-up which appear but a page and when you select the type of product there is no return on the home page but "{"result":"success"}"... Is it an upgrade problem or the module which doesn't work with tis experimental version ?

I can't login anymore in my admin panel...

ps: sorry for my english !!

thanks a lot for your help. I hope this will work it's a great gallery i love it !