The installer does not seem to handle .NET Core installation correctly.

[sleevezipper]

This needs more investigation, but several users reported that, even after installing the runtime, the app still won't work.

[sleevezipper]

A kind user on the Home Assistant Forums provided this screenshot.

[sleevezipper]

I figured out why this is happening. The app depends on Microsoft.Extensions.Hosting to start itself. To provide that, ASP.NET Core Hosting Bundle is required.

While this is a fine workaround for most, it does need elevated access to install and I don't want that.

Edit: It could also be this which I will try to figure out later.

[Eeeeeediot]

I figured out why this is happening. The app depends on Microsoft.Extensions.Hosting to start itself. To provide that, ASP.NET Core Hosting Bundle is required.

Installed this and all is working!

[sleevezipper]

This dependency won't be needed in future releases.