SubtitleEdit/subtitleedit · error · InvalidOperationException

No llama.cpp translate model found in {LlamaCppServerManager

Error message

No llama.cpp translate model found in {LlamaCppServerManager.GetAndCreateModelsFolder()}. Download one in Subtitle Edit (Auto-translate > llama.cpp), drop a .gguf into that folder, or pass --translate-model:<path.gguf>.

What it means

InvalidOperationException from ResolveLlamaCppModel when NO --translate-model was given AND none of the curated/custom models in the models folder report IsModelInstalled. This is the 'pick a sensible default' fallback failing because nothing is installed.

Source

Thrown at src/seconv/Core/AutoTranslateRunner.cs:248

            var model = all.FirstOrDefault(m => m.FileName.Equals(name, StringComparison.OrdinalIgnoreCase))
                        ?? all.FirstOrDefault(m => m.FileName.Equals(name + ".gguf", StringComparison.OrdinalIgnoreCase))
                        ?? all.FirstOrDefault(m => m.DisplayName.Equals(name, StringComparison.OrdinalIgnoreCase));
            if (model == null || !LlamaCppServerManager.IsModelInstalled(model))
            {
                throw new InvalidOperationException(
                    $"Translate model '{name}' not found in {LlamaCppServerManager.GetAndCreateModelsFolder()}. " +
                    "Download one in Subtitle Edit (Auto-translate > llama.cpp), drop a .gguf into that folder, " +
                    "or pass a full path via --translate-model.");
            }

            return model;
        }

        // No model given: pick the first installed translate model (curated order, then custom).
        var installed = LlamaCppServerManager.GetAllTranslateModels().FirstOrDefault(LlamaCppServerManager.IsModelInstalled);
        if (installed == null)
        {
            throw new InvalidOperationException(
                $"No llama.cpp translate model found in {LlamaCppServerManager.GetAndCreateModelsFolder()}. " +
                "Download one in Subtitle Edit (Auto-translate > llama.cpp), drop a .gguf into that folder, " +
                "or pass --translate-model:<path.gguf>.");
        }

        return installed;
    }
}

View on GitHub (pinned to 17a9f07487)

Solutions

1. Pass --translate-model:<path.gguf> pointing at any installed model.
2. Open SE GUI > Auto-translate > llama.cpp and download a curated translate model (this populates the folder).
3. Manually place any chat-capable .gguf into the folder printed in the message.

Example fix

// before
var installed = LlamaCppServerManager.GetAllTranslateModels().FirstOrDefault(LlamaCppServerManager.IsModelInstalled);
if (installed == null) throw new InvalidOperationException(...);

// after — same, but hint at a known-good default model name in the message
throw new InvalidOperationException($"No llama.cpp translate model in {folder}. Try `--translate-model:gemma-9b-it` after downloading, or pass a path.");

var installed = LlamaCppServerManager.GetAllTranslateModels().Where(LlamaCppServerManager.IsModelInstalled).ToList();
if (installed.Count == 0 && string.IsNullOrWhiteSpace(requestedModel))
    throw new InvalidOperationException("No translate model installed. Download one in SE GUI or pass --translate-model:<path>.");

static bool AnyTranslateModelInstalled() => LlamaCppServerManager.GetAllTranslateModels().Any(LlamaCppServerManager.IsModelInstalled);

null

When it happens

Trigger: First-time use of llamacpp translate on a machine with no .gguf in GetAndCreateModelsFolder(). The default-selection logic (FirstOrDefault(IsModelInstalled)) returns null and throws.

Common situations: Fresh install of the seconv CLI with no prior SE GUI use; models folder cleaned/emptied; user switched machines without copying models.

Related errors

• Translate model '{name}' not found in {LlamaCppServerManager
• Translate model file not found: {name}
• llama.cpp model not found - please download a model first.
• Translate engine '{options.TranslateEngine}' is not supporte
• llama-server executable not found - please download llama.cp

AI-assisted analysis of SubtitleEdit/subtitleedit@17a9f07487 (2026-08-13). Data as JSON: /api/errors/59b274090284345a. Report an issue: GitHub.