Cannot login to Appcelerator Studio (Windows) - appcelerator-studio

Question

I cannot login to Appcelerator Studio. Tried different archived solutions from Appcelerator and followed their troubleshooting guides.
I am able to login with my ID and Password to the site but not with CLI nor Studio.
As soon as I double click the Studio Icon, I get this error in the log file, and get repeated login prompts (it doesn't even try to check user and password):
!SESSION 2016-06-04 08:53:57.697 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.8.0_91
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86
!ENTRY com.aptana.core 4 0 2016-06-04 08:54:01.526
!MESSAGE (Build 4.6.0.1455770180) [ERROR] null
!STACK 0
java.lang.InterruptedException
at java.lang.ProcessImpl.waitFor(Unknown Source)
at com.aptana.core.util.ProcessRunner.processData(ProcessRunner.java:381)
at com.aptana.core.util.ProcessRunner.processData(ProcessRunner.java:345)
at com.aptana.core.util.ProcessRunner.processResult(ProcessRunner.java:432)
at com.appcelerator.titanium.core.internal.cli.NodeAppcCLI.runCommand(NodeAppcCLI.java:238)
at com.appcelerator.titanium.rcp.handlers.TitaniumSplashHandler.verifyAppcWhoami(TitaniumSplashHandler.java:1218)
at com.appcelerator.titanium.rcp.handlers.TitaniumSplashHandler.access$4(TitaniumSplashHandler.java:1215)
at com.appcelerator.titanium.rcp.handlers.TitaniumSplashHandler$3.run(TitaniumSplashHandler.java:303)
!ENTRY com.appcelerator.titanium.rcp 4 0 2016-06-04 08:54:01.541
!MESSAGE (Build 4.6.0.1455770180) [ERROR] Failed to check login status. Likely not logged in.
I am deciding wether to buy a pro plan, but this is very annoying.
I run appc login -l trace and this is what I get:
$ appc login -l trace
Appcelerator Command-Line Interface, version 5.3.0
Copyright (c) 2014-2016, Appcelerator, Inc. All Rights Reserved.
2016-06-06T13:47:43.450Z | TRACE | set environment to {"registry":"https://soft
ware.appcelerator.com","security":"https://security.appcelerator.com","baseurl":
"https://platform.appcelerator.com"}
2016-06-06T13:47:43.466Z | TRACE | executing command "login" with no plugins
2016-06-06T13:47:44.731Z | DEBUG | Get username and password...
2016-06-06T13:47:44.731Z | INFO | Appcelerator Login required to continue ...
? Appcelerator ID: perez.arroyo#gmail.com
? Password: *********
2016-06-06T13:48:18.852Z | DEBUG | Get the registry...
2016-06-06T13:48:18.852Z | DEBUG | Do login...
2016-06-06T13:48:18.867Z | TRACE | running: reg query HKLM\Software\Microsoft\C
ryptography /v MachineGuid
2016-06-06T13:48:18.867Z | TRACE | trying again, forcing it to use 64bit regist
ry view
2016-06-06T13:48:18.867Z | TRACE | running: reg query HKLM\Software\Microsoft\C
ryptography /v MachineGuid /reg:64
2016-06-06T13:48:18.899Z | TRACE | login returned { [Error: Command failed: C:\
Windows\system32\cmd.exe /s /c "reg query HKLM\Software\Microsoft\Cryptography /
v MachineGuid /reg:64"
'reg' is not recognized as an internal or external command,
operable program or batch file.
]
killed: false,
code: 1,
signal: null,
cmd: 'C:\\Windows\\system32\\cmd.exe /s /c "reg query HKLM\\Software\\Microsof
t\\Cryptography /v MachineGuid /reg:64"' } undefined
2016-06-06T13:48:18.899Z | DEBUG | body undefined
2016-06-06T13:48:18.899Z | DEBUG | err { [Error: Command failed: C:\Windows\sys
tem32\cmd.exe /s /c "reg query HKLM\Software\Microsoft\Cryptography /v MachineGu
id /reg:64"
'reg' is not recognized as an internal or external command,
operable program or batch file.
]
killed: false,
code: 1,
signal: null,
cmd: 'C:\\Windows\\system32\\cmd.exe /s /c "reg query HKLM\\Software\\Microsof
t\\Cryptography /v MachineGuid /reg:64"' }
2016-06-06T13:48:18.899Z | ERROR | login failed, please try again
2016-06-06T13:48:18.899Z | DEBUG | Get username and password...
2016-06-06T13:48:18.899Z | INFO | Appcelerator Login required to continue ...
? Appcelerator ID: