App installs, Instruments launch, but drop down in instruments says select target, and the app never launches. Console says
6/14/11 2:36:22 PM Instruments[1951] XRMobileDeviceException while performing application lookup on device : (null)
Device is iOS 4.3.3, regular build and run works and no warnings from Xcode. Profile just doesnt work. Tried cleaning the build, restarting Mac OS and the device. Still no go!
I had the same problem. I didn't solve it, but an easy workaround is to launch the app yourself and then attach to it from the Attach to Process... command in the Target menu in the Instruments window.