Android build freezes on attaching unity3D profiler

My android game freezes when I attack the unity profiler to it. I'm using unity version 4.5.3 and My device is Nexus 7. with android 4.4. my usb driver is 10.0 more text: when I build and run in Unity. Game will begin in devise but when I change Active profiler to adb , game will freezes in devise !!!