Having issues with minimwatch in Ubuntu

[ReneZ]

Hi, when I try to launch minimwatch I get some errors and the icons don't get displayed. I have used the latest download as of today. I get the below message:

java -jar ../lib/minimwatch.jar
MinimWatch 0.72, Copyright © 2012, 2013 Simon Nash. All rights reserved.

(java:9144): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(java:9144): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(java:9144): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(java:9144): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
java.awt.AWTException: TrayIcon couldn't be displayed.
at sun.awt.X11.XTrayIconPeer.<init>(Unknown Source)
at sun.awt.X11.XToolkit.createTrayIcon(Unknown Source)
at java.awt.TrayIcon.addNotify(Unknown Source)
at java.awt.SystemTray.add(Unknown Source)
at com.minimserver.lib.TrayControl$TrayView.addTrayIcon(TrayControl.java:1136)
at com.minimserver.lib.TrayControl$TrayView.createAndShowTrayIcon(TrayControl.java:​1146)
at com.minimserver.lib.TrayControl.createAndShowTrayView(TrayControl.java:119)
at com.minimserver.watch.RemoteWatch.doStart(RemoteWatch.java:73)
at com.minimserver.watch.RemoteWatch.start(RemoteWatch.java:35)
at org.jminim.core.ContextImpl.startComponent(ContextImpl.java:156)
at org.jminim.core.ContextImpl.start(ContextImpl.java:84)
at org.jminim.core.RootContextImpl.startComponent(RootContextImpl.java:36)
at org.jminim.core.ContextImpl.start(ContextImpl.java:84)
at org.jminim.core.RuntimeImpl.run(RuntimeImpl.java:398)
at org.jminim.core.LauncherImpl.run(LauncherImpl.java:681)
at org.jminim.core.LauncherImpl.launch(LauncherImpl.java:85)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.jminim.launch.Launcher.launch(Launcher.java:64)
at com.minimserver.watch.launch.LaunchWatch.main(LaunchWatch.java:19)
Selected media server: MinimServer[raspberrypi]
MinimServer[raspberrypi] is running
Enter command (? for help), or null to exit:
MinimServer[QNAPTS410-1] is running

Any advise?

Thanks, Rene