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我已按照Tower.js 的安装说明进行操作，但在尝试启动服务器时出现错误。

TypeError: Cannot read property 'watchfile' of null

我的安装步骤是-

  1. 安装 node.js
  2. 安装 mongodb
  3. 安装 Ruby 和 Ruby 开发工具包。
  4. 安装 Tower.js-
sudo npm install design.io -g
npm install tower -g
  1. 生成应用
tower new app
cd app
sudo npm install
tower generate scaffold Post title:string body:text
npm test
node server

我收到一个错误npm test-

> ./node_modules/mocha/bin/mocha $(find test -name "*Test.coffee")

'.' is not recognized as an internal or external command,
operable program or batch file.
npm ERR! Test failed.  See above for more details.
npm ERR! not ok code 0

运行节点服务器，服务器启动，但给出连续错误

c:\Projects\MyProject\node_modules\design.io\lib\design.io\extensions\watchfile.js:7
    return project.createWatcher(project.watchfile, {
                                        ^
TypeError: Cannot read property 'watchfile' of null
    at Object.module.exports (c:\Projects\MyProject\node_modules\design.io\lib\design.io\extensions\watch
ile.js:7:41)
    at Object.module.exports.extension (c:\Projects\MyProject\node_modules\design.io\lib\design.io.js:11:
6)
    at Object.<anonymous> (.:14:22)
    at Module._compile (module.js:449:26)
    at Object.Project.read (c:\Projects\MyProject\node_modules\design.io\lib\design.io\project.js:168:22)
    at Object.module.exports.coffee (c:\Projects\MyProject\node_modules\mint\mint.js:187:18)
    at Project.read (c:\Projects\MyProject\node_modules\design.io\lib\design.io\project.js:167:21)
    at fs.readFile (fs.js:176:14)
    at fs.close (c:\Projects\MyProject\node_modules\design.io\node_modules\hook.io\node_modules\npm\node_
odules\graceful-fs\graceful-fs.js:94:5)
    at Object.oncomplete (fs.js:297:15)
Forever detected script exited with code: 1
Forever restarting script for 1 time

我是 Node.js 的新手，并且在 Windows 7 64 位上。关于可能导致此错误的任何提示？

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