Hi,

It would seem I am having a similar problem. I am running Mac OS 10.4.9 on a Core Duo MacBook with the current 1.5 version of Java and do have my preferences set as mentioned above. When I try to launch Limewire it stops with a dialog box that says "fatal error". Then gives me this text:

LimeWire version 4.13.2
Java version 1.5.0_07 from Apple Computer, Inc.
Mac OS X v. 10.4.9 on i386
Free/total memory: 16297016/19791872

FATAL ERROR!

java.lang.VerifyError: (class: org/apache/log4j/LogManager, method: <clinit> signature: ()V) Incompatible argument to function
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:164)
at com.limegroup.gnutella.util.LogUtils.isLog4JAvaila ble(LogUtils.java:17)
at com.limegroup.gnutella.gui.Initializer.initialize( Initializer.java:99)
at com.limegroup.gnutella.gui.GUILoader.load(GUILoade r.java:53)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.limegroup.gnutella.gui.Main.main(Main.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at apple.launcher.LaunchRunner.run(LaunchRunner.java: 88)
at apple.launcher.LaunchRunner.callMain(LaunchRunner. java:50)
at apple.launcher.JavaApplicationLauncher.launch(Java ApplicationLauncher.java:52)


-- listing session information --
Current thread: main
Active Threads: 5
Peak Number of Thread: 9

-- listing threads --
main: 1
AWT-AppKit: 1
AWT-EventQueue-0: 1
AWT-Shutdown: 1
Image Fetcher 0: 1


-- listing properties --
LAST_EXPIRE_TIME=1176859744406


Any ideas?

thanks,
Michael

I'm having the same problems, i have the the MacBook, 2.0GHz, 1GB, 80GB harddrive, superdrive and all that, and on monday limewire wouldn't stay open, i'd open it from the dock, then when thescreen to upgrade to limewire Pro came up, i clicked later, like i always do, and then it seemed to time out or something, it just shut down, so i turned the Macbook off, and back on and it worked, now as of yesterday it won't open, i've tried upgrading to V 4.13 beta, instead of V4.12 but i'm still having the problem