Post by Shaddafare in Sprite Sheep - AI 2D animations comments

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Both fixed in 0.0.2, just uploaded — thanks for catching them.

main.py: you're right, it doesn't exist in ComfyUI Desktop. Sprite Sheep was checking for the portable build's layout. Now it accepts the Desktop folder and only the "Start ComfyUI" button is disabled there, since Desktop starts from its own app.

"3 files missing": caused by the first bug. The weights are downloaded to Sprite Sheep's folder and then linked into ComfyUI's models/, which never happened because it couldn't find your ComfyUI. On top of that, the expected file list was hardcoded to MiniMax H3 — and you had WAN selected. Now it reads the actual model you downloaded, and says "not visible to ComfyUI yet" instead of "missing".

Nothing to re-download: point at your ComfyUI folder, press Re-check, and the weights get linked in place.

uberbax5 days ago

Hi, it brings me a little bit further, however another error:

it says bad http ? where its even connecting if its local ? Attached log:

Sprite Sheep — generation error

quando: 2026-09-03T08:01:38

HTTPError: HTTP Error 400: Bad Request

request:

modello: minimax_h3_fl2va

sprite: D:/Unity Projects/AllForOne/AllForOne/Assets/Fisktak Assets/Dark Fantasy Hunters/Characters/Hunter 4.png

nome: attack

durata_s: 2.0

n_frame: 25.0

Traceback (most recent call last):

File "E:\SpriteSheep\sidecar\genera.py", line 60, in _esegui

frames = backend.genera(

^^^^^^^^^^^^^^^

File "E:\SpriteSheep\sidecar\backend\comfyui_bridge.py", line 138, in genera

r = _post("/prompt", {"prompt": grafo})

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "E:\SpriteSheep\sidecar\backend\comfyui_bridge.py", line 45, in _post

return json.load(urllib.request.urlopen(req, timeout=60))

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "urllib\request.py", line 215, in urlopen

File "urllib\request.py", line 521, in open

File "urllib\request.py", line 630, in http_response

File "urllib\request.py", line 559, in error

File "urllib\request.py", line 492, in _call_chain

File "urllib\request.py", line 639, in http_error_default

urllib.error.HTTPError: HTTP Error 400: Bad Request

Shaddafare4 days ago

Re-check never linked anything. The weights only got linked into ComfyUI's folder at the end of a download, or via "Select folder…". If you downloaded them before pointing Sprite Sheep at ComfyUI, neither happened — and Re-check only looked, while the text under it promised it would link. So it said "not visible to ComfyUI yet" forever.

That's also the 400. It is local, and ComfyUI did answer: it just rejected the graph, because the weights weren't in its models/ folder, so the filename wasn't among the values its loader nodes accept. Sprite Sheep was throwing away the response body, where ComfyUI explains exactly that. Now it shows the reason and names the file.

Fixed in 0.0.3, just uploaded. Nothing to re-download: install it, open Settings, press Re-check once and the weights get linked in place.

(Also gone: the <null> under every file in the Models panel.)

uberbax3 days ago

Another error:

and traceback:

Sprite Sheep — generation error

quando: 2026-09-05T10:41:29

RuntimeError: ComfyUI rejected the graph: Prompt outputs failed validation — CLIPLoader: clip_name: 'qwen3vl_32b_minimax_h3_int4_convrot.safetensors' not in ['qwen3vl_32b_minimax_h3_nvfp4_awq.safetensors'] — LoadImage: image - Invalid image file: spritesheep_Hunter 3.png — UNETLoader: unet_name: 'minimax_h3_fl2va_pruned_fp8_scaled.safetensors' not in ['minimax_h3_fl2va_pruned_int8_convrot.safetensors']

request:

modello: minimax_h3_fl2va

sprite: D:/Unity Projects/AllForOne/AllForOne/Assets/Fisktak Assets/Dark Fantasy Hunters/Characters/Hunter 3.png

nome: attack

durata_s: 2.0

n_frame: 25.0

Traceback (most recent call last):

File "E:\SpriteSheep-0.0.3-pre-alpha-win64\SpriteSheep\sidecar\genera.py", line 60, in _esegui

frames = backend.genera(

^^^^^^^^^^^^^^^

File "E:\SpriteSheep-0.0.3-pre-alpha-win64\SpriteSheep\sidecar\backend\comfyui_bridge.py", line 179, in genera

r = _post("/prompt", {"prompt": grafo})

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

File "E:\SpriteSheep-0.0.3-pre-alpha-win64\SpriteSheep\sidecar\backend\comfyui_bridge.py", line 54, in _post

raise RuntimeError(t("gen.grafo_rifiutato",

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