项目调试Assertion failed

最近在做一个小游戏，遇到一个问题是程序运行正常，但是每次关闭程序时就会提示：Assertion failed!

然后把程序检查了一遍，没问题啊！实在找不出哪里有问题！再看提示在CCNode.cpp 189行，进去看看，

    CCASSERT(!_running, "Node still marked as running on node destruction! Was base class onExit() called in derived class onExit() implementations?");
靠终于知道哪里出问题了，原来在onExit()中敲代码时没注意打错了，(⊙﹏⊙)b！！！

void HelloWorld::onExit()
{
Layer::init();

......

}