I just installed the cms, very easy i have to say

But when i wanna view the site, its complety blank .. and if i check the source of that blank page, it has no source at all.
But i can login to the admin part, so thats no problem. I see some standard content,i did not change anything, so what can it be ? The cms it self is in a subdirectory www.webadress.com/somesub/
Did i miss something ?
Edit: //
I put the cms to debug mode and i'm getting this message
Call to undefined function token_get_all() .... /lib/smarty/internals/core.write_compiled_include.php on line 45