Failed the portlet KonaKark 6.5.0.0 in Liferay 6.1

[mahdilashkari]

I had this problem too because I hadn't installed struts1 version. But now I could load storefront in liferay but it doesn't show "Add to Card" button for products . Could you tell me what is the problem? The admin portlet works properly.
My Liferay version is 6.1.0 and KonaKart is 6.5.1.0.