(unofficial) Part 7684 - broken in both LDView and MLCad

[tom alphin]

It looks like you don't have the correct version of the needed subfile s\64451s01.dat
It has been reworked and is now used in three parts: 64451, 11455, and in the new 7684.

That is likely the problem, but I do not know why I would be in this situation. 

Why wouldn't I get that file automatically if I take the following install steps on a brand new PC:

1. Install x64 LDraw AIOI - LDraw_All-In-One-Installer_2026-01_setup_64Bit_v1
   
2. Install x32 LDraw AIOI - LDraw_Additional-Tools-Installer_2026-01_setup_32bit_v1
   
3. Launch LDView, File > Check for Library Updates
   
4. Download latest Unofficial parts from: https://library.ldraw.org/library/unoffi...rawunf.zip and unzip them to C:\Users\Public\Documents\LDraw\Unofficial
   
5. Launch MLCad, File > Scan Parts
   

That's a detailed explanation of my install routine on a new PC.

It's likely there is a problem in some step like "Check for Library Updates". If this were buggy, maybe it needs to be fixed at an installer or app level. It is also possible that, for some reason, those subparts aren't getting included in the Unofficial Parts .zip file.

Sincerely,
---Tom

P.S. if this isn't a part issue, we can move thread to a different forum.