Instruments gives me 'SessionInactive', when trying to measure MemoryAllocations or MemoryLeaks on an MT app

when trying to analyze an MonoTouch app using Apple "Instruments", it gives me almost always after 4 seconds:

"Device Connection Failed" "Failed to start Instruments daemon for 'iOS' on 'XYZ' (v4.3.3)' (SessionInactive) "Please reconnect the device"

What am开发者_Python百科 i doing wrong? Is it, that my app takes too long to start up. Or do i need an special build type to allow Instruments to connect?

One time i was able to have "MemoryAllocation" running stable for more than 4 seconds.

Thanks for any hints

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I am having the same problem. It happens when I try to run the Leaks instrument, which requires the Allocations instrument, I guess. I can run the Leaks instrument without the Allocations instrument without any problems, but then I can't get the the information that Allocations provides like from what method the leak originates.

I haven't been able to find much about it.

EDIT: I don't know if this is what fixed it, but I killed the app instance that was running on my iPad and then ran instruments again. I did not get the failure with "SessionInactive" and it seems to be running fine now.

I also found a similar topic on the Apple Dev Forums. It didn't really help me, but it might help you.

EDIT 2: It's not perfect. It only runs for a few minutes, but it's better than not at all.