Can't run Instruments from Xcode

Question

I recently upgraded to Snow Leopard and since then I am having difficulty running Instrument to instrument my app from Xcode. The Record button would be grayed out, and nothing

Answer 1

Make sure all of your instruments support recording modes. When I upgraded from Xcode6 to Xcode7, one of my instruments was marked as "This instrument's supported recording modes are none". When I deleted this specific instrument, the recording button becomed enabled.