Hi koko,
You gave me hope but after checking page and file permissions I'm back to reality.
I'm using Include plugin and sometimes it displays the page correctly, other times not.
Correctly:
http://www.zakonodaja.com/zakoni/vii/1/1/zddv_1/cleni/8.clen/8.clen (click on the link '10. člena')
Incorrectly:
http://www.zakonodaja.com/zakoni/vii/1/1/zddv_1/cleni/140.clen/140.clen (click on the second link '36. oziroma 37. členom' and then on the link '7. in 8. člena' - second box will have raw wiki text)
Borut