Custom nodes and parts of UI not appearing (Queue Prompt / Manager / core nodes missing

Custom nodes and parts of UI not appearing (Queue Prompt / Manager / core nodes missing)

Hi,

I’m using **ComfyUI Portable (Windows)** with the **latest ComfyUI-Manager**.

After installing several custom nodes (Impact Pack, Comfyroll, TextOnSegs, etc.), I noticed that **multiple things are missing**, not only custom nodes but also **parts of the ComfyUI interface itself**.

**Issues observed:**

* Several custom nodes do not appear at all (Add Node menu or Kwyd autocomplete)
* Missing UI elements in **Queue Prompt**, such as:

* Extra options
* Queue Front
* View History
* Core nodes / panels also seem absent, including:

* VAE Decode
* Save Image (images / filename_prefix)
* CLIP space options (Save / Load / Refresh / Load Default / Clear)
* **ComfyUI-Manager UI is not showing**

I’ve restarted ComfyUI, cleared cache, and reinstalled nodes via Manager, but the problem persists.

This makes me suspect a **failed initialization or frontend load issue**, where an error (possibly from a custom node) prevents parts of the UI and node registry from loading correctly.

Has anyone seen a case where a single failing module breaks UI components and node registration?
Any advice on how to debug this (logs, safe mode, clean frontend rebuild)?

Thanks