Cannot open c++ editor any more after I add “NDK_ROOT” enviornment variables in cocos2d-x Eclipse project

cocos2d-x
1

I try to deploy a cocos2d-x project to android platform. After I created a cocos2d-x project, I import the project into Eclipse. Then I set the C/C++ build enviorment variables. After insert a new variable "NDK_ROOT (value = /Users/firestoke/001_Library/android-ndk-r9d)

7754fa07425fb073.png937×626

Then close Eclipse and restart it, the .cpp & .h file cannot be opened any more!
It shows a error like this screenshot:

a523003ad396758c.png905×758

It shows an error message: “Editor could not be initialized”. And I even cannot open the C/C++ build setting page too. what the fuck is that? any thing wrong?

My development enviornment:
Mac OS X 10.10.4
cocos2d-x: 3.4
Eclipse: LUNA 4.4.2
NDK: android-ndk-r9d