I have been trying to install Sonic Ether's Unbelievable shaders, but when I install the GLSL shaders mod I get an error on start-up.
I am using version 1.3.13, GLSL shader's mod 1.46, and optifine HD D3 ultra.
I am also installing the mods into the modpack.jar file. I was able to get optifine runing as well.
Any help is appreciated. Thank you.