Reproducible in latest Win10.

I took a look at the respective source code and suspect this __Dirname call; I remember webpack having similar issues with production Electron applications.

However, building with npm run make on Windows with the latest code version works just fine (both the resulting executable as well as the squirrel installer), so I guess this might be a result of building the Win32 executable on a non Win32 machine?

Interestingly enough, I spent a lot of time in Windows 10 and don't think I understand what could break. If you open the developer tools, do you see anything in the console?

I took a closer look at the problem. While the dev console itself does not offer any hints on whats happening, getFile in templates.ts catches the following error:

"Error: ENOENT, static\templates\DesktopCapturer\renderer.js not found in C:\Users\hab\AppData\Local\electron-fiddle\app-0.1.0\resources\app.asar
    at notFoundError (ELECTRON_ASAR.js:115:19)
    at fs.readFile (ELECTRON_ASAR.js:518:16)
    at go$readFile (C:\Users\hab\AppData\Local\electron-fiddle\app-0.1.0\resources\app.asar\node_modules\graceful-fs\graceful-fs.js:73:14)
    at Object.readFile (C:\Users\hab\AppData\Local\electron-fiddle\app-0.1.0\resources\app.asar\node_modules\graceful-fs\graceful-fs.js:70:12)
    at Promise (C:\Users\hab\AppData\Local\electron-fiddle\app-0.1.0\resources\app.asar\node_modules\universalify\index.js:13:12)
    at new Promise (<anonymous>)
    at Object.readFile (C:\Users\hab\AppData\Local\electron-fiddle\app-0.1.0\resources\app.asar\node_modules\universalify\index.js:7:14)
    at s (file:///C:/Users/hab/AppData/Local/electron-fiddle/app-0.1.0/resources/app.asar/dist/app.0908156d.js:22:315)
    at Object.a [as getTemplateValues] (file:///C:/Users/hab/AppData/Local/electron-fiddle/app-0.1.0/resources/app.asar/dist/app.0908156d.js:22:377)
    at <anonymous>"

Additionally (and at least on my win machine), it looks as if the error is also related to specific templates:

⨯ doesn't work
✓ works

App: ⨯
AutoUpdate: ⨯
BrowserView: ✓
BrowserWindow: ✓
Clipboard: ⨯
ContentTracing: ⨯
Cookies: ✓
CrashReporter: ⨯
Debugger: ✓
DesktopCapturer: ⨯

This lead me extracting and comparing both .asar files contents. It looks like capitalization of the templates folders differs, the failing templates align perfectly with this pattern (installed left):

While this is probably the cause of the error, I don't really know the reason for the discrepancy, nor why it only happens to some of the folders. Are you building the Win version on a non-Win machine?

Even the templates you've checked above, like BrowserView, aren't working for me - perhaps there are multiple issues at play? I don't get any new console output when I try to open a Show Me template, but upon loading electron-fiddle I get Fetch Types: Called too soon, deferring a few times (no problem) and then Fetch Types: Failed, dependencies do not exist (from src\renderer\fetch-types.ts:95); is that last message an issue? It's still a warning and not an error.

I'll fix this today.

@neighthan For what it's worth, that's not an issue at all. That message shows up when we attempt to fetch types and you're offline, types do not exist for your version, or GitHub didn't give us proper types.

still doesnt work on the latest release guys
https://github.com/electron/fiddle/tree/v0.4.1

Seeing this problem in v0.4.2 on macOS too

It seems like the problem is because of the letter casing. Template folders in asar are camel cased for the most part, but there is toLower() somewhere along the way when creating the path.
If they match all works.

Issue persists, I have downloaded latest version but same issue, please advise.
below are the log files from developer tools
-1548240951258.log
-1548240951260.log

Alright, after having taken another look, I'm wondering if we've somehow failed to update or are dealing with another interesting bug.

I'll update the app with more logging to figure out what's actually happening.

For each Show Me, there is error in console about template files missing. Few of them:

Could not get template file: Error: ENOENT, static\templates\app\index.html not found in C:\Users\fex\AppData\Local\electron-fiddle\app-0.5.0\resources\app.asar
Could not get template file: Error: ENOENT, static\templates\app\main.js not found in C:\Users\fex\AppData\Local\electron-fiddle\app-0.5.0\resources\app.asar
Could not get template file: Error: ENOENT, static\templates\app\renderer.js not found in C:\Users\fex\AppData\Local\electron-fiddle\app-0.5.0\resources\app.asar
Could not get template file: Error: ENOENT, static\templates\browserwindow\index.html not found in C:\Users\fex\AppData\Local\electron-fiddle\app-0.5.0\resources\app.asar

Issues also persist in macOS version 0.5.0

Also appears to be fixed on macOS in v 0.5.1. Not sure why the release notes only refer to the issue being on Windows, it was stated here a couple of times that this was also an issue on macOS.