Failure to start after installing ComfyUI_Comfyroll_CustomNodes

My setup was working fine. Then I installed ComfyUI_Comfyroll_CustomNodes. Now startup doesnt finish. Comfy opens a blank screen, and the loading circle rotates endlessly.

The log doesnt say anything out of the ordinary, and does not give an import failed error.

As soon as I delete the ComfyUI_Comfyroll_CustomNodes folder, my setup goes back to working.

Any ideas?