Save problem with new game (STALKER: Call of Pripyat)

Hello)
not so long ago I was a stalker Call of Pripyat, it was on my computer and now decided to go back
There was such problem: I start a new game, but the game is not saved and the old saves will not be deleted or overwritten with the new game
he passed the first time with the saves everything was in order, the
game was deleted and reinstalled, but it did not help, the old saves remained
version 1.6.02.
help with advice)
and thanks in advance =)