Hi,
We are having issues on the Mac reloading (refreshing) our lwjgl applet. On some browsers setting the newJnm to true works great. On safari it shits the bed.If we use system.exit it shuts down safari as well as the applet!!!
it seems
org.lwjgl.LWJGLException: Parent.isDisplayable() must be true
is the big culprit here. Whenever it tries to remake the display it dies. We do destroy the parent display on shutdown.
Here is the output when we try and reload from within eclipse appletloader
Any Ideas?
Aug 25, 2009 3:06:01 PM com.jme.system.PropertiesGameSettings load
WARNING: Properties file not complete.
org.lwjgl.LWJGLException: Parent.isDisplayable() must be true
at org.lwjgl.opengl.Display.createWindow(Display.java:303)
at org.lwjgl.opengl.Display.create(Display.java:839)
at org.lwjgl.opengl.Display.create(Display.java:767)
at com.jmex.awt.applet.BaseApplet$1.run(BaseApplet.java:123)
Aug 25, 2009 3:06:01 PM class cube.CubeMobile start()
SEVERE: Exception in game loop
java.lang.NullPointerException
at com.jme.renderer.lwjgl.LWJGLRenderer.<init>(LWJGLRenderer.java:200)
at com.jme.system.lwjgl.LWJGLDisplaySystem.initForApplet(LWJGLDisplaySystem.java:688)
at com.jmex.awt.applet.BaseApplet.gameLoop(BaseApplet.java:156)
at com.jmex.awt.applet.BaseApplet$1.run(BaseApplet.java:129)
Shutting Down
End Shutting Down
See if the lwjgl demo applet (gears) works on safari.
If it does, check what they do different when initializing / restarting the applet.
Did you ever success with this?
We are having the same issue with the JOGL version. You can only ever run once in a browser without a complete browser shutdown and restart. And when you kill the window you get thread exceptions. Here's the dumps FWIW and thansk for ANY help, we are hosed right now 
End of first applet:
eb 4, 2010 7:51:51 PM imi.demos.AppletBase stop
INFO: stop
Feb 4, 2010 7:51:51 PM imi.demos.AppletBase destroy
INFO: destroy
Exception in thread "pool-2-thread-1" java.lang.IllegalMonitorStateException
at java.util.concurrent.locks.ReentrantLock$Sync.tryRelease(ReentrantLock.java:127)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.release(AbstractQueuedSynchronizer.java:1175)
at java.util.concurrent.locks.ReentrantLock.unlock(ReentrantLock.java:431)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:369)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:637)
Exception in thread "pool-2-thread-4" java.lang.IllegalMonitorStateException
at java.util.concurrent.locks.ReentrantLock$Sync.tryRelease(ReentrantLock.java:127)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.release(AbstractQueuedSynchronizer.java:1175)
at java.util.concurrent.locks.ReentrantLock.unlock(ReentrantLock.java:431)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:369)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:637)
Exception in thread "pool-2-thread-5" java.lang.IllegalMonitorStateException
at java.util.concurrent.locks.ReentrantLock$Sync.tryRelease(ReentrantLock.java:127)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.release(AbstractQueuedSynchronizer.java:1175)
at java.util.concurrent.locks.ReentrantLock.unlock(ReentrantLock.java:431)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:369)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:637)
Exception in thread "pool-2-thread-2" java.lang.IllegalMonitorStateException
at java.util.concurrent.locks.ReentrantLock$Sync.tryRelease(ReentrantLock.java:127)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.release(AbstractQueuedSynchronizer.java:1175)
at java.util.concurrent.locks.ReentrantLock.unlock(ReentrantLock.java:431)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:369)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:637)
Exception in thread "pool-2-thread-3" java.lang.IllegalMonitorStateException
at java.util.concurrent.locks.ReentrantLock$Sync.tryRelease(ReentrantLock.java:127)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.release(AbstractQueuedSynchronizer.java:1175)
at java.util.concurrent.locks.ReentrantLock.unlock(ReentrantLock.java:431)
at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:369)
at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:947)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at java.lang.Thread.run(Thread.java:637)
Mac-Pro:~ macuser$
Exception when started the next applet in the session:
Feb 4, 2010 7:51:27 PM imi.demos.AppletBase start
INFO: start
Exception in thread "Thread-20" java.lang.IllegalStateException: There is already an active OpenGL canvas.
at com.jme.system.jogl.JOGLDisplaySystem.createCanvas(JOGLDisplaySystem.java:310)
at org.jdesktop.mtgame.Renderer.createCanvas(Renderer.java:583)
at org.jdesktop.mtgame.Renderer.addRenderBuffer(Renderer.java:605)
at org.jdesktop.mtgame.RenderManager.addRenderBuffer(RenderManager.java:180)
at imi.demos.AppletBase$RenderPanel.<init>(AppletBase.java:374)
at imi.demos.AppletBase$AppletInitializer.run(AppletBase.java:202)
at java.lang.Thread.run(Thread.java:637)