Unable to connect the Oculus CV1 When use Unity5.4f1 build target PC Standalone

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Unable to connect the Oculus CV1 When use Unity5.4f1 build target PC Standalone

1.I downlaod unity 5.4.0f1
2.install it
3.setting the dev about oculus rift cv1 ok!
4.creat a new project
5.set he vr sdk is oculus
6.build the project to pc
7.run the exe
8. unable to connect the oc cv1
!!!
but i use unity 5.3.5 ,everything is ok !
please help me thank you

See Oculus section.