Enhance Graphics Pack Won't Work (Errors)

Recieve following erros for multiple files. Graphics assets won’t load (no characters, buildings, etc.):

“File *.smp uses an invalid filetype; some sprites will not display. This is likely caused by a mod.”

All installations are fresh, there are no mods installed. I get this on 3 seperate installs on different PCs, all running up to date Win10 and latest gfx drivers:

Ryzen 9 3900x, RTX 2070S
Intel i7, RTX 2070
Ryzen 7 3700x, radeon rx 5700 xt

Search for that error yields no results, which is weird as it does it on 3 different PCs with different hardware. Please help.

I have the EXACT same issue, tried 3 different PCs as well. All with the SAME DAMN ISSUE.