beeradmoore/dlss-swapper · error · Exception

GamePage_CouldNotFindGameInstallPathTemplate

Error message

GamePage_CouldNotFindGameInstallPathTemplate

What it means

GameControlModel.OpenInstallPathAsync opens the game's install directory in Windows Explorer; when Game.InstallPath does not exist on disk it throws a localized 'could not find game install path' exception formatted with the stored path. It indicates the recorded install location is stale or wrong.

Solutions

1. Verify the game is installed and locate its current folder, then update the game's InstallPath entry.
2. Re-detect/re-import the game so its install path is refreshed automatically.
3. Reconnect the missing drive or restore the folder if it was on external/cloud storage.
4. Manually correct InstallPath in the game's settings/library entry.

Example fix

// before: stale InstallPath
await model.OpenInstallPathAsync(); // throws
// after: guard before calling
if (!Directory.Exists(Game.InstallPath))
    await RescanGameInstallPathAsync(Game); // update stored path
else
    await model.OpenInstallPathAsync();

if (string.IsNullOrWhiteSpace(Game.InstallPath) || !Directory.Exists(Game.InstallPath))
    throw new DirectoryNotFoundException($"Install path not found: {Game.InstallPath}");

static bool InstallPathExists(Game game) => !string.IsNullOrWhiteSpace(game.InstallPath) && Directory.Exists(game.InstallPath);

try { await control.OpenInstallPathAsync(); }
catch (Exception ex) when (ex.Message.Contains("CouldNotFindGameInstallPath"))
{ Logger.Error(ex); PromptRelocateGame(Game); }

When it happens

Trigger: Calling OpenInstallPathAsync when Directory.Exists(Game.InstallPath) is false — the game's recorded InstallPath no longer resolves (game uninstalled, moved, or path saved incorrectly).

Common situations: Game uninstalled or moved to another drive after being added; Steam/Epic library relocated; path points to a non-connected external drive; game added before installation completed.

Understand the failure class

Background: "File not found" and ENOENT errors: why libraries can't find a file that should exist — this error's family across 50 libraries.

Related errors

• GamePage_DllPicker_CouldNotFindFileTemplate
• GamePage_CouldNotFindGameInstallPathTemplate

AI-assisted analysis of beeradmoore/dlss-swapper@ab9b1e2d4b (2026-09-15). Data as JSON: /api/errors/ebc2ec2cd3a55d5c. Report an issue: GitHub.

Appendix: source

Thrown at src/UserControls/GameControlModel.cs:263

                        _ = NVAPIHelper.Instance.DisplayNVAPIErrorAsync(gameControl.XamlRoot);
                    }
                }
            }
        }
    }

    [RelayCommand]
    async Task OpenInstallPathAsync()
    {
        try
        {
            if (Directory.Exists(Game.InstallPath))
            {
                Process.Start("explorer.exe", Game.InstallPath);
            }
            else
            {
                throw new Exception(ResourceHelper.GetFormattedResourceTemplate("GamePage_CouldNotFindGameInstallPathTemplate", Game.InstallPath));
            }
        }
        catch (Exception err)
        {
            Logger.Error(err);

            if (gameControlWeakReference.TryGetTarget(out GameControl? gameControl))
            {
                var dialog = new EasyContentDialog(gameControl.XamlRoot)
                {
                    Title = ResourceHelper.GetString("General_Error"),
                    CloseButtonText = ResourceHelper.GetString("General_Okay"),
                    Content = err.Message,
                };
                await dialog.ShowAsync();
            }
        }
    }

View on GitHub (pinned to ab9b1e2d4b)