How do I fix an "Invalid Program gbuffers_textured_lit" error in Minecraft - GLSL Shaders? [closed]
Zoe Patterson
Published May 08, 2026
I installed the GLSL Shaders Mod for Minecraft 1.5.2 with Magic Launcher.
When I try to open a ShaderPack called SEUS v10.0 Lite.zip, I get a message:
[Shaders] Error: Invalid program gbuffers_textured_lit
and a red screen (screenshot 1).
But with another pack called SEUS v10.0 Standard.zip, it gives me some small, blue screens in the bottom-left corner (screenshot 2). It also gives me the message:
[Shaders] Error: Invalid program gbuffers_textured_lit
Screenshot 1:Screenshot 2:
Does anyone know how to fix this?
I am using Windows 8 and Minecraft 1.5.2 (While using Magic Launcher for mod installing).
41 Answer
Change line 47 in composite.vsh from 'float timePow = 2.0f;' to 'float timePow = 3.0f; Changing it will get rid of the Invalid Program Composite error.
--Source
Possible change for Minecraft 1.6.2, may work for minecraft 1.5.2. Let me know if this helps, I'll keep looking otherwise.
3