I cannot use my itunes with IP5

I just bought IP5, but i cant use it with my itunes. The problem is "THe iphone cannot be used because it requires itunes version 10.7 or later. Go to www.itunes.com/uk to download the latest version of itunes". I unistalled already my old itunes, and downloaded the latest version but it still got this problem. When i connect with IP4, it works, nothing happend.

Pls help me. Thanks