npm throws error while install the yeoman

I am working with a corporate office. I am using proxy ( but I provided all privileges ) still i am getting a error while i trying to install yeoman how to overcome with this?

here is the error I am getting:

npm http 200 http://registry.npmjs.org/supports-color
npm ERR! Error: ENOENT, lstat 'D:\Bow\node_modules\yo\node_modules\sudo-block\no
de_modules\chalk\readme.md'
npm ERR! If you need help, you may report this *entire* log,
npm ERR! including the npm and node versions, at:
npm ERR!     <http://github.com/npm/npm/issues>

npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files (x86)\\nodejs\\\\node.exe" "C:\\Program File
s (x86)\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "yo"
npm ERR! cwd D:\Bow
npm ERR! node -v v0.10.28
npm ERR! npm -v 1.4.9
npm ERR! path D:\Bow\node_modules\yo\node_modules\sudo-block\node_modules\chalk\
readme.md
npm ERR! fstream_path D:\Bow\node_modules\yo\node_modules\sudo-block\node_module
s\chalk\readme.md
npm ERR! fstream_type File
npm ERR! fstream_class FileWriter
npm ERR! code ENOENT
npm ERR! errno 34
npm ERR! fstream_stack C:\Program Files (x86)\nodejs\node_modules\npm\node_modul
es\fstream\lib\writer.js:284:26
npm ERR! fstream_stack Object.oncomplete (fs.js:107:15)
npm http GET http://registry.npmjs.org/supports-color/-/supports-color-0.2.0.tgz

npm ERR! Error: UNKNOWN, open 'C:\Users\mb112830\AppData\Roaming\npm-cache\chalk
\0.4.0\package\package.json'
npm ERR! If you need help, you may report this *entire* log,
npm ERR! including the npm and node versions, at:
npm ERR!     <http://github.com/npm/npm/issues>

npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files (x86)\\nodejs\\\\node.exe" "C:\\Program File
s (x86)\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "yo"
npm ERR! cwd D:\Bow
npm ERR! node -v v0.10.28
npm ERR! npm -v 1.4.9
npm ERR! path C:\Users\mb112830\AppData\Roaming\npm-cache\chalk\0.4.0\package\pa
ckage.json
npm ERR! code UNKNOWN
npm ERR! errno -1
npm http 200 http://registry.npmjs.org/strip-ansi
npm http GET http://registry.npmjs.org/strip-ansi/-/strip-ansi-0.3.0.tgz
npm http 200 http://registry.npmjs.org/ansi-regex

Any one suggest me the right way please?