App won't launch on Windows - Javascript error about vibrancy

[Rifdhan]

When I launch Caprine it gives me a dialog saying "A javascript error occurred in the main process", with a stack trace that seems to be about some vibrancy parameter being invalid.

Upon clicking "OK" the window closes and the app does not launch (no taskbar icon, etc), however task manager shows a Caprine process is still running.

I have tried uninstalling and reinstalling Caprine to no effect.

OS: Windows 10 x64
Caprine version: 2.37.0

[Rifdhan]

As a workaround for now, I have installed version 2.36.0 and it does not seem to have this issue.

[sindresorhus]

// @whitecrownclown

[ghost]

I get the exact same error when installing 2.38.0 on my system.

OS: Windows 10 x64, Version 1809, Build 17763.737

[whitecrownclown]

@sindresorhus
I have investigated this and my conclusion is that some configs have stale values for vibrancy which makes the validation fail and crash the application.

The fix for it would mean to delete/reset the configuration files.Unfortunately we cannot do this from the app since the validation is done before anything else. Maybe we could make use of migrations?

[GraionDilach]

Also happened when I bumped from 2.21 to 2.39. #1094 wasn't enough, apparently.

[mawkler]

To anyone with this problem: I was able to solve this issue by deleting C:\Users\*user*\AppData\Roaming\Caprine\config.json and then reinstalling Caprine.