Errors suddenly appearing

Hello,

I’ve built (using ant) and run (java -jar startup.jar) the source code (v2.6.0-beta2) many many times.

Today it has suddenly started displaying the run-time errors listed below, but it seems to continue to work OK.

Clicking ‘Appearance’ in the Preferences page causes it to hang without displaying an error - not sure if that is related, as I hadn’t ever clicked it before.

It would appear from the messages that it is trying to start the Jingle plugin and Windows native (I didn’t select that).

The compiled version I have installed (v2.5.8) is un-affected and works normally (using Windows system L&F).

Any ideas? Thanks

Service listing
Exception in thread “Thread-28” java.lang.NoSuchMethodError: org.jivesoftware.sm
ackx.ServiceDiscoveryManager.getInstanceFor(Lorg/jivesoftware/smack/XMPPConnecti
on;)Lorg/jivesoftware/smackx/ServiceDiscoveryManager;
at org.jivesoftware.smackx.jingle.nat.STUN.serviceAvailable(STUN.java:22
9)
at org.jivesoftware.sparkplugin.JinglePlugin$1.construct(JinglePlugin.ja
va:90)
at org.jivesoftware.spark.util.SwingWorker$2.run(SwingWorker.java:131)
at java.lang.Thread.run(Unknown Source)
JNIWrapper license not found.
A valid JNIWrapper license file is expected in the following folder: C:\DOCUME~1
\RADDERS\LOCALS~1\Temp
20-Jul-2010 13:25:58 org.jivesoftware.spark.util.log.Log error
SEVERE:
java.lang.ExceptionInInitializerError
at com.jniwrapper.win32.system.Kernel32.isUnicode(Kernel32.java:74)
at com.jniwrapper.win32.FunctionName.(FunctionName.java:27)
at com.jivesoftware.plugin.jniwrapper.WindowsNativeHandler.(Wind
owsNativeHandler.java:38)
at com.jivesoftware.plugin.jniwrapper.JNIWrapperPlugin.initialize(JNIWra
pperPlugin.java:24)
at org.jivesoftware.spark.PluginManager$1.run(PluginManager.java:397)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.jniwrapper.n
at com.jniwrapper.J.b(SourceFile:145)
at com.jniwrapper.J.(SourceFile:32)
at com.jniwrapper.Parameter.(SourceFile:22)
… 13 more
20-Jul-2010 13:25:58 org.jivesoftware.spark.util.log.Log error
SEVERE: Adding