Cordova构建失败，找不到文件，但文件存在

Question

C:\Users\jamiller\Desktop\magicCarpetApp\platforms\windows8\cordova\lib>ls
WindowsStoreAppUtils  build.js  clean.js  deploy.js  log.js  target-list.js

C:\Users\jamiller\Desktop\magicCarpetApp\platforms\windows8\cordova\lib>cordova build windows8
Running command: C:\Users\jamiller\Desktop\magicCarpetApp\platforms\windows8\cordova\build.bat

Building Cordova Windows 8 Project:
        Configuration : Debug
        Directory : C:\Users\jamiller\Desktop\magicCarpetApp\platforms\windows8
C:\Users\jamiller\Desktop\magicCarpetApp\platforms\windows8\cordova\lib\build.js(57, 5)     WshShell.Exec: The system cannot find the file specified.

任何人都知道发生了什么事吗？它没有出现错误，说build.js不存在，但显然确实如此。对它的权限也很好，我应该完全访问它。