How to fix SEUS errors?

Saturday, May 3, 2014

When I attempt to play Minecraft using Sonic Ether's Unbelievable Shaders v10.2 preview, or any version of SEUS for that matter, I get 4 errors displayed in chat and the shaders do not work. Please help!

Image of what Minecraft looks like when using SEUS:

EDIT: When using the fix provided in this question, the game no longer shows up tiny and with inverted colors, but it still gives me the error "Invalid program composite1" and the shader effects are not there.