Serious Sam RTX asking for a file that doesnt exist in a folder that doesnt exist.

[Stephen199027]

It is asking for ArStrong.tex in a folder named interface. I cannot find any reference to ArStrong.tex anywhere.

[Axer128]

That's a regular texture that exists in 1_00c.gro. (Those are the games resource files, which are just zip files, the game just reads the data as uncompressed thus the error msg is correct to what it knows)

.. So yea, you didn't follow the readme to install the game correctly.... here are the steps from the readme:
Unzip TFE_RT_Bin.zip into an empty folder

Unzip TFE_RT_Textures.zip to the same folder

This archive contains textures (upscaled/PBR)
(Optional) DLSS:

download nvngx_dlss.dll, place into the Bin/ folder
download RayTracedGL1-DLSS.zip, and replace RayTracedGL1.dll in Bin/ with the downloaded one

Copy these original Serious Sam: The First Encounter files from the Steam folder:

Levels folder
1_00_ExtraTools.gro
1_00_music.gro
1_00c.gro
1_00c_Logo.gro
1_00c_scripts.gro
1_04_patch.gro
Launch Bin/SeriousSamTFE.exe