I converted my project written in Swift 2.2 to swift 2.3 to run in Xcode 8 beta. But the app is crashing when calling the webservice giving the "error memory read failed for 0*0" without giving any further information. I think it will be a problem with completion handler block or error in NSURLSession.
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I'm seeing this as well, in an objective-c app on Xcode 8. Did you find a solution? – Keith Jan 10 '17 at 18:43
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The solution for me was to quit Xcode and trash the contents of Xcode's "Derived Data" folder before relaunch. – Eric Aya Aug 06 '17 at 22:25