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

I was unable to get instruments to work with my iPhone (it had previously worked). The behaviour I saw was that xcode would say "finished running - Profiling [app name]" before the instruments window was even shown (the choose instrument window).

I worked around this by going to product->scheme->edit scheme, select profile [app name] and select an instrument (i.e. Allocations) under the instrument drop down (instead of "ask on launch").

Once I did this, selecting Product->profile worked for me and the instruments was running.

I wanted the zombie instrument which strangely isn't in the xcode dropdown, I was able to use this by simply using file->new in instruments (while the allocations instrument was still connected and running) and I could then choose the zombies instrument and the record button wasn't greyed out!

All of this was with iOS 7.0.3 and xcode 5.0.1.

I hope this helps at least one other person to stop ripping their hair out, but knowing xcode I somehow doubt it!