Hello, I wanna install Ultramixer 2.0.5Beta WITH Java but unfortunaly i get errors during the installation:
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manuel:/home/manuel/Desktop# java -jar ./Ultra*.jar
Exception in thread “main” java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit
at java.awt.Toolkit.getDefaultToolkit() (/usr/lib/libgcj.so.6.0.0)
at java.awt.Font.tk() (/usr/lib/libgcj.so.6.0.0)
at java.awt.Font.getPeerFromToolkit(java.lang.String, java.util.Map) (/usr/lib/libgcj.so.6.0.0)
at java.awt.Font.Font(java.lang.String, int, int) (/usr/lib/libgcj.so.6.0.0)
at javax.swing.plaf.FontUIResource.FontUIResource(java.lang.String, int, int) (/usr/lib/libgcj.so.6.0.0)
at javax.swing.plaf.metal.DefaultMetalTheme.() (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0)
at javax.swing.plaf.metal.MetalLookAndFeel.createDefaultTheme() (/usr/lib/libgcj.so.6.0.0)
at javax.swing.plaf.metal.MetalLookAndFeel.MetalLookAndFeel() (/usr/lib/libgcj.so.6.0.0)
at javax.swing.UIManager.() (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.initializeClass() (/usr/lib/libgcj.so.6.0.0)
at com.izforge.izpack.installer.GUIInstaller.loadLookAndFeel() (Unknown Source)
at com.izforge.izpack.installer.GUIInstaller.GUIInstaller() (Unknown Source)
at java.lang.Class.newInstance() (/usr/lib/libgcj.so.6.0.0)
at com.izforge.izpack.installer.Installer.main(java.lang.String[]) (Unknown Source)
at gnu.java.lang.MainThread.call_main() (/usr/lib/libgcj.so.6.0.0)
at gnu.java.lang.MainThread.run() (/usr/lib/libgcj.so.6.0.0)
Caused by: java.lang.ClassNotFoundException: gnu.java.awt.peer.gtk.GtkToolkit not found in gnu.gcj.runtime.SystemClassLoader{urls=[file:./UltraMixer-2.0.5beta-linux-withjava.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}
at java.net.URLClassLoader.findClass(java.lang.String) (/usr/lib/libgcj.so.6.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String, boolean) (/usr/lib/libgcj.so.6.0.0)
at java.lang.ClassLoader.loadClass(java.lang.String) (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.forName(java.lang.String, boolean, java.lang.ClassLoader) (/usr/lib/libgcj.so.6.0.0)
at java.lang.Class.forName(java.lang.String) (/usr/lib/libgcj.so.6.0.0)
at java.awt.Toolkit.getDefaultToolkit() (/usr/lib/libgcj.so.6.0.0)
…16 more
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What should i do?
thx for your help 
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