UpdateManager.GitHubUpdateManager System.AggregateException when latest release is pre-release

[FrozenSoda]

Hello, in my application CSClock (https://github.com/steel9/CSClock), when executing this code, and when the latest release is a pre-release, this error message shows up: https://gyazo.com/50928b19d4e77d174b5a7f8c34c195f7
But when latest release is not a pre-release, my program is just starting hanging on the startup? (no GUI shows). I think the problem has to do with the updater, as this hanging-issue doesn't happen when latest release is a pre-release.

You can check all of the code in my repo, but here is the update code in my application.
Code:

using (var mgr = UpdateManager.GitHubUpdateManager("https://github.com/steel9/CSClock"))
{
          try
          {
                await mgr.Result.UpdateApp();
          }
          catch (Exception ex)
          {
               //exception handling here
          }
}

[shiftkey]

Squirrel ignores any pre-release releases found for the repository, unless you use the overload and set prerelease to true:

Squirrel.Windows/src/Squirrel/UpdateManager.Factory.cs

Lines 73 to 76 in de5baa9

	var latestRelease = releases
	.Where(x => prerelease || !x.Prerelease)
	.OrderByDescending(x => x.PublishedAt)
	.First();

That feels like it's encountering this message when it can't find any valid releases:

But when latest release is not a pre-release, my program is just starting hanging on the startup?

This feels like a different issue, and it's not clear to me whether the update is failing to apply or something further along the process is part of the problem. I'd check the SquirrelSetup.log file and see if the update is correctly applied.