File not found (Tasklist_Icon.png

I get a FileNotFoundException (see below) when starting
sync. This error occurs only on a single machine
(Windows XP SP2, current patchlevel, JSE Runtime 5.0
Update 2)

Do you have any idea which reason this could have?

-------------
org.eclipse.swt.SWTException: i/o error
(java.io.FileNotFoundException:
images\Tasklist_Icon.png (Das System kann den
angegebenen Pfad nicht finden))
at org.eclipse.swt.SWT.error(SWT.java:2691)
at org.eclipse.swt.SWT.error(SWT.java:2616)
at
org.eclipse.swt.graphics.ImageLoader.load(ImageLoader.java:152)
at
org.eclipse.swt.graphics.ImageData.<init>(ImageData.java:353)
at org.eclipse.swt.graphics.Image.<init>(Image.java:701)
at
net.sourceforge.fullsync.ImageRepository.getImage(ImageRepository.java:66)
at
net.sourceforge.fullsync.ui.GuiController.getImage(GuiController.java:97)
at
net.sourceforge.fullsync.ui.TaskDecisionPage.getIcon(TaskDecisionPage.java:96)
at
net.sourceforge.fullsync.ui.WizardDialog.updateTop(WizardDialog.java:228)
at
net.sourceforge.fullsync.ui.WizardDialog.show(WizardDialog.java:160)
at
net.sourceforge.fullsync.ui.TaskDecisionList$2.run(TaskDecisionList.java:171)
at
org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:106)
at
org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:2749)
at
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2434)
at
net.sourceforge.fullsync.ui.GuiController.run(GuiController.java:129)
at
net.sourceforge.fullsync.cli.CommandLineInterpreter.parse(CommandLineInterpreter.java:241)
at net.sourceforge.fullsync.Main.main(Main.java:33)