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I read the question "How to install mods for the new minecraft launcher" and got the modified directory to show up in the list and I can load mods for a 1.5.2 version from the launcher now. The problem I am having is that when Minecraft comes up everything is flipped. It is both upside down and in mirror image. If I load the same jar file using the old minecraft launcher it works just fine. (Mind you there is a lot of rearranging between these tries.)
Does anyone know what is causing this? Any help is appreciated. Thanks.