Yes, in the file that you download, there is folder called 'Shader'. In that folder, there is another folder called 'bGUI'. Put the 'bGUI' folder in the 'shader' folder that is in your Toribash folder.
Works fine on my iMac G5. I just unzipped the files contents into toribash>data>scripts
/ls !shadermixer.lua and presto
I haven't tried to save anything yet but the script is running fine.
It shows me an error on opening it. "Lua script error in file !ShaderMixer.lua: cannot open ./data/script/gui/bgui/guiloader.lua: No such file or directory"
It shows me an error on opening it. "Lua script error in file !ShaderMixer.lua: cannot open ./data/script/gui/bgui/guiloader.lua: No such file or directory"
your probably missing the guiloader.lua from the folder, try installing an old version and just copy and paste it