Broken UVs and GUI

I'll keep it short and simple.

So a user sent me this:



But all 4 of my systems and all my other users see this:


(What it's supposed to look like)

This is AFTER a complete wipe and re-installation. What is the bug here?? And why is he the only one experiencing it?? Does anyone have a clue? I'll attach an output log and diag from the user. Let's solve this one together!