Xcode 8 Memory Graph says "No selection" and not working

Question

I am working with a project using Xcode 8.0 and Swift3.

I want to use Memory Graph Debugger but it shows nothing:

Expected appearance (from tutorial):

Why can't I use this feature?

This project was created using Xcode 8 (not migrated from old version of Xcode).

Is bitcode related to this problem?

I am trying to use Memory Graph with "Debug" configuration and bitcode on "Debug" is enabled(YES).

Answer 1

Computer restart is what you have to do.

It happened for me too, and no amount of tweaking the settings fixed it - disappointingly, the only thing that worked was a complete restart of the computer.

Answer 2

This could be because you haven't enabled the things that need to be enabled for your requirements. You could try these two steps:

• First, launch scheme editing by clicking on "Edit Scheme" as in this screen shot:

• Second: go to "Diagnostics" and enable the things that you need to work (sometimes I need these two things):

• Close out of editing schemes and try again.

Props to this answer for shaking my own memory awake on this one.