Can't save any files or ANYTHING

*If in wrong section, please change*

I downloaded Limewire and everything went great and all, but then It started to deny me downloads and give me this error message when I tried to boot up Limewire:

LimeWire version 4.16.6
Java version 1.6.0_05 from Sun Microsystems Inc.
Windows Vista v. 6.0 on x86
Free/total memory: 32794888/33357824

com.limegroup.gnutella.gui.GUILoader$StartupFailed Exception: file [LimeWire.jar] has hash of [F73A5406A60A48F69E99F10AFDC368F8] instead of expected [A00EAB0AE1132B710BC84BE0CFDE56AF]
at com.limegroup.gnutella.gui.GUILoader.verifyHashes( GUILoader.java:318)
at com.limegroup.gnutella.gui.GUILoader.sanityCheck(G UILoader.java:284)
at com.limegroup.gnutella.gui.GUILoader.load(GUILoade r.java:57)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.limegroup.gnutella.gui.Main.main(Main.java:44)

STARTUP ERROR!

Help?

Delete your LW preferences folder http://www.gnutellaforums.com/genera...der-vista.html & see if that helps.