出现一下错误

Error: unknown error code.
This generally means that another instance of this process was already running or is hung in the debugger.

重启机器后可以这样

Couldn't register com.hep.push with the bootstrap server. Error: unknown error code.
This generally means that another instance of this process was already running or is hung in the debugger.

 

用低版本的Xcode出现这个情况

 

The version of iOS on ““Hortor”的 iPad” does not match any of the versions of iOS supported for development with this installation of the iOS SDK. Please restore the device to a version of the OS listed below, or update to the latest version of the iOS SDK; which is available here.

重新添加下就可以了