Failed to load `IQuest-Coder-V1-40B-Loop-Instruct-4bit` in LMStudio

Hi!

I can't load mlx-community/IQuest-Coder-V1-40B-Loop-Instruct-4bit in LM Studio:

2026-01-10 13:47:25 [DEBUG]
 [model_kit][INFO]: Loading model from /Users/dd_bb/.lmstudio/models/mlx-community/IQuest-Coder-V1-40B-Loop-Instruct-4bit...
2026-01-10 13:47:25 [DEBUG]
 ValueError: Model type iquestloopcoder not supported.

At:
  /Users/dd_bb/.lmstudio/extensions/backends/vendor/_amphibian/app-mlx-generate-mac14-arm64@9/lib/python3.11/site-packages/mlx_lm/utils.py(75): _get_classes
  /Users/dd_bb/.lmstudio/extensions/backends/vendor/_amphibian/app-mlx-generate-mac14-arm64@9/lib/python3.11/site-packages/mlx_lm/utils.py(210): load_model
  /Users/dd_bb/.lmstudio/extensions/backends/vendor/_amphibian/app-mlx-generate-mac14-arm64@9/lib/python3.11/site-packages/mlx_lm/utils.py(331): load
  /Users/dd_bb/.lmstudio/extensions/backends/vendor/_amphibian/app-mlx-generate-mac14-arm64@9/lib/python3.11/site-packages/mlx_engine/model_kit/model_kit.py(93): _full_model_init
  /Users/dd_bb/.lmstudio/extensions/backends/vendor/_amphibian/app-mlx-generate-mac14-arm64@9/lib/python3.11/site-packages/mlx_engine/model_kit/model_kit.py(128): __init__
  /Users/dd_bb/.lmstudio/extensions/backends/vendor/_amphibian/app-mlx-generate-mac14-arm64@9/lib/python3.11/site-packages/mlx_engine/generate.py(115): load_model
2026-01-10 13:47:25 [DEBUG]
 lmstudio-llama-cpp: failed to load model. Error: Error when loading model: ValueError: Model type iquestloopcoder not supported.

Runtime: LM Studio MLX v0.41.0

MLX version info:
- mlx-engine==0ce04aa
- mlx==0.30.1
- mlx-lm==0.30.0
- mlx-vlm==0.3.10

According to mlx-lm authors, mlx-engine needs to be updated for this models to work.

Thanks!

Start by reviewing the mlx-engine model-loading path referenced in the traceback and the linked mlx-lm issue 752. Check how the iquestloopcoder model type is handled by the reported mlx-lm and mlx-engine versions; done means the linked model loads successfully in LM Studio without the unsupported-model error.