Google app engine python应用程序引擎dev_appserver不可用（1.7.6）

尽管日志上说dev_appserver已经启动，但浏览器无法连接到它

*** Running dev_appserver with the following flags:
    --skip_sdk_update_check=yes --port=9090 --admin_port=9000
Python command: /usr/bin/python2.7
INFO     2013-03-28 02:00:05,042 devappserver2.py:401] Skipping SDK update check.
WARNING  2013-03-28 02:00:05,049 api_server.py:328] Could not initialize images API; you are likely missing the Python "PIL" module.
WARNING  2013-03-28 02:00:05,054 simple_search_stub.py:976] Could not read search indexes from /var/folders/rc/x4y8pzk14x96nxmk7l66btv00000gn/T/appengine.example.user123/search_indexes
INFO     2013-03-28 02:00:05,056 api_server.py:152] Starting API server at: http://localhost:49602
INFO     2013-03-28 02:00:05,078 dispatcher.py:98] Starting server "default" running at: http://localhost:9090
INFO     2013-03-28 02:00:05,084 admin_server.py:117] Starting admin server at: http://localhost:9000

我甚至连SDK控制台都打不到。我更改了端口，多次删除了/var/folders/./weirdfolder，但仍然无法让它工作

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感谢您的帮助

我在这里找到了解决方案： 问题与最新的chrome升级有关

如何修复：

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去chrome://flags 并将“内置异步DNS”设置为“已禁用”，然后重新启动浏览器“

您救了我的命，我的头发没有被撕掉。谢谢。