Beatmap List Exception If No Beatmaps Are Installed

If you run osu!lazer with no beatmaps (other than the theme song), it displays the theme song as the selected beatmap (with none in the menu) and creates an exception if you try to play it.

This is pretty much a known bug, but it might as well be created into an official issue. For clarification as to what exactly happens, if you attempt to play the beatmap, it launches into the loading screen (shown in the second screenshot) and then reverts back to the beatmap list. Here’s the exception message: Could not load this beatmap sucessfully (osu.Game.Rulesets.UI.BeatmapInvalidForRulesetException: Beatmap can't be converted for the current ruleset. at osu.Game.Rulesets.UI.HitRenderer`1..ctor(WorkingBeatmap beatmap, Boolean isForCurrentRuleset) at osu.Game.Rulesets.Osu.OsuRuleset.CreateHitRendererWith(WorkingBeatmap beatmap, Boolean isForCurrentRuleset) at osu.Game.Screens.Play.Player.load(AudioManager audio, BeatmapDatabase beatmaps, OsuConfigManager config, OsuGame osu))!

Screenshots:

[Shadowtail117]

I haven’t delved into the code that much, and I myself am not a professional coder by any means, but I imagine that when it loads the beatmap list an if statement can check how many beatmaps there are, and if there is only one (the theme song) then it will return a message to the player, e.g.:

public void LoadBeatmapList() //Placeholder method for its actual name in the code
{
   if(beatmapList.length == 1)
    {
      /* This would display something like "You currently have no beatmaps installed. To fix this, you can:
      1. Go to the osu! beatmap listing, download a beatmap file, and either double click on it or drag it into 
      this window,
      2. Download a beatmap via osu!direct, or
      3. Make one yourself using the Editor."

      In addition, the visual on the left that would display the selected beatmap's information would all be 
      blank. */
   }
  //Rest of the code...
}

It’d look a bit like this, I imagine:

[peppy]

This should be long-resolved.