-[UIViewController _loadViewFromNibNamed:bundle:]

*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: '-[UIViewController _loadViewFromNibNamed:bundle:] loaded the "MainViewController" nib but the view outlet was not set.'

*** First throw call stack:

(0x13bb052 0x154cd0a 0x1363a78 0x13639e9 0xd7f0d 0xd83a9 0xd85cb 0x38a73 0x38ce2 0x38ea8 0x3fd9a 0x1f7f 0x109d6 0x118a6 0x20743 0x211f8 0x14aa9 0x12a5fa9 0x138f1c5 0x12f4022 0x12f290a 0x12f1db4 0x12f1ccb 0x112a7 0x12a9b 0x1c92 0x1c05)

terminate called throwing an exceptionCurrent language: auto; currently objective-c

(gdb)

由于把别的控件的UIView的referencing outlet 下的new refecening outlet 与file‘s owner中的Viev 删掉了。只要重新关联就行了。。