I don’t know how much this was my fault, but it took me some time to figure this out.
Problem:
Anyway Xcode couldn’t access my iPhone 4, nor another iPhone 4 nor iPad 2. The error that I keep getting in the Organizer was:
Xcode has encountered an unexpected error (0xC00D)Permission denied, at ‘/SourceCache/DTDeviceKit/DTDeviceKit-1196/DTDeviceKit/DTDeviceKit_Utilities.m:854’
I’ve tried restarting the devices, mac and reinstalling Xcode two times from the App Store. I’ve found all the internet solutions ineffective.
Solution:
I’ve found that ~/Library/Developer permissions were wrong.
Simple sudo chmod -R 777 ~/Library/Developer/ did the trick.
I was listening…
Ranza Research 
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