nodejs' ldapauth module install failure

I have a nodejs application running on windows7 64bit. Now I want to install the ldapauth (http://ift.tt/1O5mjzZ) but when I do I get the following error during install. Please help!

C:\Programs\nodejsCloudant++>npm install ldapauth
npm WARN package.json make@0.0.0 No repository field.

> bcrypt@0.7.5 install C:\Programs\nodejsCloudant++\node_modules\ldapauth\node_modules\bcrypt
> node-gyp rebuild
C:\Programs\nodejsCloudant++\node_modules\ldapauth\node_modules\bcrypt>if not defined npm_config_node_gyp (node "C:\Programs\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (rebuild)
gyp ERR! configure error
gyp ERR! stack Error: Command failed: CreateProcessW: Access is denied.
gyp ERR! stack