Can't run demo

[Ying1986]

2015-12-04 19:02:35.203 AwesomeMenu[26585:218332] *** Assertion failure in -[UIApplication _runWithMainScene:transitionContext:completion:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit_Sim/UIKit-3512.29.5/UIApplication.m:3299 2015-12-04 19:02:35.255 AwesomeMenu[26585:218332] *** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'Application windows are expected to have a root view controller at the end of application launch' *** First throw call stack: ( 0 CoreFoundation 0x0239ea84 __exceptionPreprocess + 180 1 libobjc.A.dylib 0x01e5de02 objc_exception_throw + 50 2 CoreFoundation 0x0239e91a +[NSException raise:format:arguments:] + 138 3 Foundation 0x018d3e86 -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 118 4 UIKit 0x00348a9b -[UIApplication _runWithMainScene:transitionContext:completion:] + 3975 5 UIKit 0x0036ce4d __84-[UIApplication _handleApplicationActivationWithScene:transitionContext:completion:]_block_invoke3208 + 68 6 UIKit 0x00344fb4 -[UIApplication workspaceDidEndTransaction:] + 163 7 FrontBoardServices 0x061c8ca4 __37-[FBSWorkspace clientEndTransaction:]_block_invoke_2 + 71 8 FrontBoardServices 0x061c877b __40-[FBSWorkspace _performDelegateCallOut:]_block_invoke + 54 9 FrontBoardServices 0x061e61a3 -[FBSSerialQueue _performNext] + 184 10 FrontBoardServices 0x061e65da -[FBSSerialQueue _performNextFromRunLoopSource] + 52 11 FrontBoardServices 0x061e58d6 FBSSerialQueueRunLoopSourceHandler + 33 12 CoreFoundation 0x022b8d1f CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 15 13 CoreFoundation 0x022ae9ab __CFRunLoopDoSources0 + 523 14 CoreFoundation 0x022addc8 __CFRunLoopRun + 1032 15 CoreFoundation 0x022ad706 CFRunLoopRunSpecific + 470 16 CoreFoundation 0x022ad51b CFRunLoopRunInMode + 123 17 UIKit 0x00344854 -[UIApplication _run] + 540 18 UIKit 0x0034a1eb UIApplicationMain + 160 19 AwesomeMenu 0x000606ba main + 138 20 libdyld.dylib 0x03b56a21 start + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException