v2.16.4

Added

• Added Comfy Kitchen Attention (--use-ck-attention) as a Cross Attention Method launch option for ComfyUI and ComfyUI-Zluda - thanks to @e-nord!

Changed

• Windows ROCm PyTorch installs now come from AMD's new permanent ROCm 10 package repositories, avoiding the CUDA error: invalid argument / hipErrorInvalidValue failures reported with the ROCm 7.14.1 builds — packages already on 7.14.1 need a reinstall, or an update that also upgrades PyTorch (like ComfyUI's) - thanks to @NeuralFault!

Fixed

• Installing a package into a folder that already contains files — like an existing ComfyUI installation placed in Data\Packages to be imported — now shows the folder's total size and file count and requires explicit confirmation, instead of silently deleting everything in it; this includes the first-run one-click installer (#1733)
• Turning off shared model folders no longer tries to delete real directories at the link locations — only links created by Stability Matrix are removed, so the model folders of an imported package are never touched (#1733)
• The package uninstall confirmation now correctly lists models/checkpoints among the items that will be deleted for packages using config-based model sharing (ComfyUI's default) — previously it implied they were safe — and shows the package folder's total size
• Fixed the Workflows page loading forever (and eventually freezing the app) when the workflow library folder is itself a link to ComfyUI's user\default\workflows folder — the Stability Matrix link ComfyUI gets at launch pointed back into the same folder, nesting Stability Matrix\Stability Matrix\... thousands of levels deep. That link is no longer created (and an existing one is removed the next time ComfyUI is launched) when it would loop, and the workflow and model folder scans now follow linked folders at most once
• Fixed the Cross Attention Method launch options for ComfyUI and ComfyUI-Zluda letting you enable several at once — they're mutually exclusive, so they're now radio buttons - thanks to @e-nord!
• Fixed #1725 - AI-Toolkit jobs crashing with a distutils error on installs from before v2.16.3 that still run Python 3.11, no reinstall needed - thanks to @NeuralFault!
• Fixed Wan2GP v13's Deepy panel repeatedly showing Connection to server lost and logging issubclass() arg 1 must be a class — Stability Matrix's console logging wrapper now preserves Gradio's exception class (Wan2GP #2298)
• Fixed Wan2GP (and AI Toolkit's SageAttention source build) crashing with ModuleNotFoundError: No module named 'distutils' on Python 3.12+ — forcing SETUPTOOLS_USE_DISTUTILS=stdlib unconditionally broke on versions where distutils was removed from the standard library entirely, it's now version-gated the same way AI Toolkit's own fix already was
• Environment Variables configured in Settings now correctly override the workaround variables (like SETUPTOOLS_USE_DISTUTILS) that some packages set internally

Supporters

🌟 Visionaries

Small release, big priority: 2.16.4 is mostly about keeping your files exactly where you left them. Imported ComfyUI folders can't be wiped by surprise anymore, and a looping workflow link can't freeze the app. That kind of careful, unflashy work only gets our full attention because of our Visionaries, so thank you Waterclouds, MrMxyzptlk12836, bluepopsicle, Ibixat, Droolguy, snotty, dispenser, cusalapapen1481, moon_milky2843, sn3232323233350, CC, TwistedDragon, hasezou11013179, and Akros. Every folder that stays put has a bit of you in it. 💛

🚀 Pioneers

To our Pioneers SinthCore, Jisuren, jweg79, Hurbie53, Cjloha, Alligator1907, CommissarGiygas16050, bastardofbethlehem, Zombop, Silerae, joshsciascia72, and cy_hart691842: patch releases like this one land quietly, and you back them anyway. We never take that for granted. And hello to okachako, our newest Pioneer; it's so nice to see your name here! 💛