transferring to a new domain files load but posts don't

Hello guys,

i just ran into a problem i’m transferring a friends blog and all the files load but i cant see any post or pages.

this is what i did

i backup the files and database,
open the database file and replace the old domain with the new domain,
upload themes, plugins and uploads, to the new domain
then import the new database (new domain was previously added)
logged in to the administrator panel to see if everything was there (and it was)
then i went into the site to see if the blog was working,
it loads all menus, post and page tiles, i can click on the links and it take me to the right page, but when i do so the page shows a 404 error. and doesn’t load the content.

can someone help me with this i don’t understand what is happening

languagecomics.com