ionic framework command line error undefined:1 SyntaxError: Unexpected token

I am running windows 8.1 64 bit with node version 0.12.7 .

I have install both cordova and ionic globally all was working fine. But now every ionic command returns error .

example iconic --version

undefined:1

SyntaxError: Unexpected token

i have reinstalled node and ionic but problem still persists.

but following npm command returns

>npm ls -g --depth=0

├── bower@1.3.12
├── cordova@5.1.1
├── electron-prebuilt@0.29.2
├── forever@0.14.1
├── ionic@1.6.1
├── nodemon@1.3.7
├── pm2@0.12.4
├── stylus@0.50.0
├── vs-mda@0.1.19
└── vs-mda-targets@0.1.12