I have installed npm, and also yarn (just in case npm didn't work), and upon installing and opening hyper, I was given the message that there is an error in updating plugins. I entered the plugin 'hyperline' to test into the config file. The popup window said that it cannot find 'C:\Users\JupiterStorm\.hyper_plugins\node_modules\hyperline'.
In the config file, I also modified the shell, and shell-arg:
shell: 'C:\\Program Files\\Git\\git-cmd.exe',
shellArgs: ['--command=usr/bin/bash.exe', '-l', '-i'],
I've attached a screenshot of the dev tools with the error.

I've been looking for answers for hours now but couldn't find anything that was helpful.
It doesn't explain your problem but hyperline is not compatible with Windows.
Can you try with another plugin?
Oh, oops, I didn't know hyperline wasn't compatible. I'll try again tomorrow morning. Hyper works amazingly on my Linux machine by the way. I only have issues with things on Windows.
I have the same problem since the last update to 1.4.3. For me is throwing this error every time that it tries to update the plugins or when i try to do it trough the menu option (Ctr+Shift+U). All the plugins are compatible with Windows and were previously installed. Adding a new plugin throws the same error reported by @j-leow.
I don't know if is relevant but here's the yarn-error.log found in the .hyper_plugins folder. Hope it helps!
Arguments:
C:\Users\my_user\AppData\Local\hyper\app-1.4.3\Hyper.exe C:\Users\my_user\AppData\Local\hyper\app-1.4.3\resources\bin\yarn-standalone.js install --no-emoji --no-lockfile --cache-folder C:\Users\my_user\.hyper_plugins\cache
Yarn version:
0.24.6
Node version:
7.9.0
Platform:
win32 x64
npm manifest:
{
"name": "hyper-plugins",
"description": "Auto-generated from `~/.hyper.js`!",
"private": true,
"version": "0.0.1",
"repository": "zeit/hyper",
"license": "MIT",
"homepage": "https://hyper.is",
"dependencies": {
"hyperterm-paste": "latest",
"hyper-blink": "latest",
"hyper-dracula": "latest",
"hyper-tab-icons": "latest",
"hyper-statusline": "latest"
}
}
yarn manifest:
No manifest
Lockfile:
No lockfile
Trace:
Error: getaddrinfo ENOTFOUND registry.yarnpkg.com registry.yarnpkg.com:443
at errnoException (dns.js:28:10)
at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:73:26)
@dkast Here's your problem: Error: getaddrinfo ENOTFOUND registry.yarnpkg.com registry.yarnpkg.com:443
We switched to an integrated version of yarn, which uses registry.yarnpkg.com instead of npmjs.org.
Can you try to go to https://registry.yarnpkg.com in your browser? (you should get a json response), if this works, try installing yarn and installing something with it, I think there's a problem with your DNS/network/firewall causing this.
I'm also facing the same issue every time I select Plugins -> Update.

This is the error that I get as a Windows notification. I understand its incomplete but the console in the developer tools is not showing anything. Is there any other way to produce a complete log?
I'm on a newly installed Windows PC with Hyper 1.4.3 running on default .hyper.js.
I tried using other addons to see if they worked and I am having the same issue. In fact, @manojkhannakm, your issue and mine are exactly the same in terms of the error message I get.
Can you remove your yarn-error.log if present and retry to update plugins?
Is there a new yarn-error.logfile?
@chabou There is no yarn-error.log, I have searched everywhere. Also there is no error in the console either maybe that is why the yarn-error.log file is not getting created I guess.
Will try to reproduce it on Windows.
I encountered the same issue, by looking into the console logs of hyper, I found it's complaining about "'C:\Users\MyFirstName' is not recognized as an internal or external command".
I looked into the source code and found in https://github.com/zeit/hyper/blob/master/app/plugins/install.js, the line:
const cmd = [process.execPath, yarn].concat(args).join(' ');
is joining the unescaped execPath, which in my case and in @manojkhannakm's case both contain a space. I guess the issue could be fixed by correctly escaping the arguments before joining them? (the yarn one also contain a space, so perhaps both need to be escaped). Hope this helps resolving the issue!
which in my case and in @manojkhannakm's case both contain a space
I think you pointed out the right cause. Thank you so much.
I'll try to fix this ASAP, but PR welcome ;)
I have the same issue:

Hyper 1.4.4, W10.

Hyper 1.4.7 Windows 7 Ultimate 64 ( CPU: AMD )
No errors in console:
(re)loading renderer plugins
index.html:35 total init time 765.0000000000001
No plugins loaded:
plugins: [],
Is this mean that is fixed and on the next version i will not have this problem anymore or it means that i need to download or edit some files somewhere to fix my problem?
@lZzozZl Its already fixed in 1.4.7. Try doing a clean install. Also remove the folders C:\Users\
Most helpful comment
@lZzozZl Its already fixed in 1.4.7. Try doing a clean install. Also remove the folders C:\Users\.hyper_plugins and C:\Users\\AppData\Roaming\Hyper before reinstalling.