WinView2 - failed to register windows class

I've been using WinView2 for the last 1.5 years to release my game and it's been working great. I just tried with v388.2 and get the following:

- when running the game .exe

- when running the icon updater:

I tried exporting a smaller project and it worked fine. My project is too big to share. Any thoughts on why this is happening?

Update: I also tried the NW.js export. It worked, and I was able to run the game.exe. But the WindowsIconUpdater.exe is still throwing the same error. I'm confused, any ideas?

So it looks like the 'purpose' setting for my app icon changed from 'App icon' to 'none set' since my last export. Not sure how/when that happened, but it's reproduceable...

- take any sample project

- remove all icons but one

- set that icon's purpose to 'none set'

- export to WinView2 of nw.js

If NW.js, the game.exe file will work but not the WindowsIconUpdater.exe.

If WinVIew2, neither the game.exe nor the WindowsIconUpdater.exe will work.

Will submit bug...