Unable to profile app on device with iOS 9.0.1 using Xcode 7, 7.0.1 or 7.1 beta

Question

I have been trying unsuccessfully to profile my device (via Instruments) using the latest version of Xcode 7.0.1 (7A1001 released 9/28), as well as the previous version of X

Answer 1

This issue still occurred with XCode 10.3 and iOS 12.4.2

I restarted the device only, and it worked.