similar problem here:
2015-10-06 22:28:05.001 xcodebuild[5061:323050] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/DVTFrameworks/DVTFrameworks-8208/DVTFoundation/FoundationClassCategories/DVTNSBundleAdditions.m:45
Details: Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory" UserInfo={NSLocalizedDescription=Could not open /Users/davec/Developer/depot/kJams/Development/build/kJams Lite.app, NSLocalizedFailureReason=No such file or directory}
Object: <NSBundle>
Method: +dvt_executablePathForBundleAtPath:
Thread: <NSThread: 0x7f83e24184b0>{number = 1, name = main}
Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide.
2015-10-06 22:28:05.002 xcodebuild[5061:323050] [MT] DVTAssertions: Warning in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-8228/IDEFoundation/Execution/RunDestinations/IDERunDestination.m:185
Details: Unable to find platform for /Users/davec/Developer/depot/kJams/Development/build/kJams Lite.app: Error Domain=DVTFoundationNSBundleAdditionsErrorDomain Code=1 "Couldn't find platform in Info.plist CFBundleSupportedPlatforms or binary for kJams Lite.app" UserInfo={NSLocalizedDescription=Couldn't find platform in Info.plist CFBundleSupportedPlatforms or binary for kJams Lite.app}
Function: DVTPlatform *_IDEPlatformForPathRunnable(IDEPathRunnable *__strong)
Thread: <NSThread: 0x7f83e24184b0>{number = 1, name = main}
Please file a bug at http://bugreport.apple.com with this warning message and any useful information you can provide.