DarkRP 2.4.2 problem

Hi
Today I installed DarkRP 2.4.2 version from here ( http://darkrp.googlecode.com/svn/trunk/ ) I add new DarkRP folder to my gamemodes but nothing works. When I try to choose job it say to chat “/Mob Boss”. Same problem if i try buy guns, doors or moneyprinters.
I know how to edit files but i dont know where problem is? Anyone know?
I used SVN Tortoise.