"Failed to install 'aerogear-cordova-push':undefined" error

[jeff01]

In a Windows 2012 R2 server, run as adminstrator, in a test/typical cordova project root folder, we still cannot add this plugin:

E:\*\*\test>cordova plugin add aerogear-cordova-push
Fetching plugin "aerogear-cordova-push" via npm
Installing "aerogear-cordova-push" for android
Failed to install 'aerogear-cordova-push':undefined
undefined


E:\*\*\test>cordova -v
5.3.3

Any advice appreciated.