Some Post Goes 404

If you can help me please.

i have used the premium version of the plugin and and use it in my site http://rawforbeauty.com/blog/ it imported the post well, but i find out that other post are going 404, such as http://rawforbeauty.com/blog/10-worst-food-ingredient-list.html. i have tried changing the permalinks to default and back but nothing work.

please help thank you.

http://wordpress.org/extend/plugins/fg-joomla-to-wordpress/