I have installed appcelerator studio 4.0 in windows 7 64 bit, after successfully installed when I login to appcelerator studio i gives me below error.
ERROR | Command failed: C:\Users\MyPC.appcelerator\install\4.0.2\package \node_modules\arrow\node_modules\acs\bin\acs login --no-banner --host https://ad min.cloudapp-enterprise.appcelerator.com <user login> <password> exited with exit code:8
I have attached error image here. 
Your early reply is very helpful. Thanks in advance.