[Koha] Can't add news

Hi all, My Koha version is 3.00.02.012 , I am using Cent OS 5.3, all perl modules are installed, done translation, have 2 users kohaadmin and test user withall preveligies checked. But More->Tools page is empty in kohaadmin and in test user. how can i fix this problem ? What must i do ? Thanks in advance