ХД патч не стоял никогда, ошибка таже.

"C:\Program Files\Java\jre6\bin\java.exe" -Xms560M -Xmx560M -jar Minecraft.jar
Heap size: 541.0
Heap is big size
run complite
Exception in thread "Thread-2" java.lang.NoClassDefFoundError: net/minecraft/src/TextureOilFX
at net.minecraft.client.MinecraftApplet.init(MinecraftApplet.java:33)
at net.minecraft.Launcher.replace(Launcher.java:166)
at net.minecraft.Launcher$1.run(Launcher.java:108)
Caused by: java.lang.ClassNotFoundException: net.minecraft.src.TextureOilFX
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 3 more