Basically, I have watched some YouTube videos on how to install shaders and what not, and included in the shaders pack was 4 versions of the "Sonic Ether's Unbelievable shaders" pack; Standard, Ultra, Ultra with Motion Blur, and Ultra with DOF (Depth of Field). I was getting this odd error with all 4 version that made items, entities, and other players on screen very pixel-y and confusing looking. The pictures below are screenshots I took on both single player and various multiplayer servers (Desiredcraft; mc.desiredcraft.net, and Ubercraft; www.ubermc.net). I would also like to note that many other shader packs have this error too, but this one has the worst of these many on-screen errors. My guess is that it could be something with Optifine, or the core shaders mod, but I can't be sure. If you know a fix, or possibly how to contact the authors of this mod, please tell me. Thanks!
TL;DR: Entities, items, and player names with SEUS shaders are all messed up, please help. Thanks!