[LUA ERROR] [string "cocos/cocos2d/Cocos2dConstants.lua"]:620: attempt to index a nil value解决办法

把下面这段代码注释掉就行了

cc.AsyncTaskPool.TaskType =
{
    TASK_IO = 0,
    TASK_NETWORK = 1,
    TASK_OTHER = 2,
    TASK_MAX_TYPE = 3,  
}

或者在前面加上

cc.AsyncTaskPool = {}

另外附上 cocos code ide常见问题解决方案的网址 点击打开链接