the error looks like this:
Uncaught exception from thread:Thread[LWJGL Renderer Thread,5,main]
java.lang.IllegalStateException: glGetString(GL_VERSION) returned null - possibly caused by missing current context.
at org.lwjgl.opengl.GLContext.getSupportedExtensions(GLContext.java:222)
at org.lwjgl.opengl.ContextCapabilities.initAllStubs(ContextCapabilities.java:4964)
at org.lwjgl.opengl.ContextCapabilities.<init>(ContextCapabilities.java:5322)
at org.lwjgl.opengl.GLContext.useContext(GLContext.java:366)
at org.lwjgl.opengl.ContextGL.makeCurrent(ContextGL.java:195)
at org.lwjgl.opengl.DrawableGL.makeCurrent(DrawableGL.java:110)
at org.lwjgl.opengl.Display.makeCurrent(Display.java:731)
at org.lwjgl.opengl.Display.makeCurrentAndSetSwapInterval(Display.java:1050)
at org.lwjgl.opengl.Display.create(Display.java:877)
at org.lwjgl.opengl.Display.create(Display.java:782)
at com.jme3.system.lwjgl.LwjglDisplay.createContext(LwjglDisplay.java:137)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.initInThread(LwjglAbstractDisplay.java:113)
at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:205)
at java.lang.Thread.run(Unknown Source)
Application was not initialized.
Help?
Looks like your graphics card is not supporting OpenGL. What kind of card do you have and are your drivers up to date?