Yeah, it's a sad thing you don't have the ATI card to see what's wrong ;(

Okay, hold on...
So I start Singleplayer/join an MP server, and after a bit of loading...


Uncaught exception from thread:Thread[LWJGL Renderer Thread,5,main]
com.jme3.renderer.RendererException: Shader link failure, shader:Shader[language=GLSL100, numSources=2, numUniforms=20, shaderSources=[ShaderSource[name=MatDefs/MyLighting.vert, defines, type=Vertex], ShaderSource[name=MatDefs/MyLighting.frag, defines, type=Fragment]]] info:Fragment shader(s) failed to link,  vertex shader(s) failed to link.
 
   at com.jme3.renderer.lwjgl.LwjglRenderer.updateShaderData(LwjglRenderer.java:1087)
   at com.jme3.renderer.lwjgl.LwjglRenderer.setShader(LwjglRenderer.java:1122)
   at com.jme3.material.Material.renderMultipassLighting(Material.java:799)
   at com.jme3.material.Material.render(Material.java:1028)
   at com.jme3.renderer.RenderManager.renderGeometry(RenderManager.java:658)
   at com.jme3.renderer.queue.RenderQueue.renderGeometryList(RenderQueue.java:299)
   at com.jme3.renderer.queue.RenderQueue.renderQueue(RenderQueue.java:351)
   at com.jme3.renderer.RenderManager.renderViewPortQueues(RenderManager.java:894)
   at com.jme3.renderer.RenderManager.flushQueue(RenderManager.java:850)
   at com.jme3.renderer.RenderManager.renderViewPort(RenderManager.java:1130)
   at com.jme3.renderer.RenderManager.render(RenderManager.java:1173)
   at com.jme3.app.SimpleApplication.update(SimpleApplication.java:254)
   at com.jme3.system.lwjgl.LwjglAbstractDisplay.runLoop(LwjglAbstractDisplay.java:149)
   at com.jme3.system.lwjgl.LwjglDisplay.runLoop(LwjglDisplay.java:182)
   at com.jme3.system.lwjgl.LwjglAbstractDisplay.run(LwjglAbstractDisplay.java:223)
   at java.lang.Thread.run(Unknown Source)

Build version:20120508

Memory usage:
Working memory: 66% (48728536/73150464)  VM Max: 9% (48728536/518979584)

Rendering caps:
    FrameBuffer
    FrameBufferMRT
    FrameBufferMultisample
    OpenGL20
    OpenGL21
    ARBprogram
    GLSL100
    GLSL110
    GLSL120
    FloatTexture
    NonPowerOfTwoTextures

Statistics:
  Vertices = 0
  Triangles = 0
  Uniforms = 0
  Objects = 0
  Shaders (S) = 0
  Shaders (F) = 0
  Shaders (M) = 6
  Textures (S) = 2
  Textures (F) = 2
  Textures (M) = 13
  FrameBuffers (S) = 1
  FrameBuffers (F) = 1
  FrameBuffers (M) = 4
Application settings:
UseInput = true
AudioRenderer = LWJGL
Height = 600
Renderer = LWJGL-OpenGL2
BitsPerPixel = 24
Fullscreen = false
StencilBits = 0
DepthBits = 24
VSync = false
Frequency = -1
Width = 800
Samples = 0
DisableJoysticks = true
FrameRate = -1

Display adapter information:
Adapter:ati2dvag
Driver Version:6.14.10.6891
Vendor:ATI Technologies Inc.
Version:2.1.8304 Release
Renderer:Radeon X300/X550/X1050 Series
GLSL Ver:1.20

I've read a bit and I see a particular bug doesn't let me run Mythruna: it doesn't run on some ATI cards, and in an old topic you said you'll try to fix it. Any progress on that? Because I really  want to play.