Exception in thread "Thread-3" java.lang.NoClassDefFoundError: org/lwjgl/LWJGLException
at net.minecraft.client.MinecraftApplet.init(Unknown Source)
at net.mcgl.MCGLFrame.replace(MCGLFrame.java:130)
at net.mcgl.MCGLFrame$2.run(MCGLFrame.java:107)
Caused by: java.lang.ClassNotFoundException: org.lwjgl.LWJGLException
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 3 more