Ciao a tutti
ho inserito un look and feel ma in netbeans all'avvio nonostante con il run il programma funzioni mi da i seguenti errori

Qualcuno sa dirmi come posso fare ?

Warning: ch.randelshofer.quaqua.util.Preferences failed to load Mac OS X global system preferences
java.io.FileNotFoundException: C:\Documents and Settings\molotov1974\Library\Preferences\.GlobalPr eferences.plist (Impossibile trovare il percorso specificato)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.jav a:106)
at java.io.FileReader.<init>(FileReader.java:55)
at ch.randelshofer.quaqua.util.Preferences.readPList( Preferences.java:111)
at ch.randelshofer.quaqua.util.Preferences.loadGlobal Preferences(Preferences.java:78)
at ch.randelshofer.quaqua.util.Preferences.get(Prefer ences.java:49)
at ch.randelshofer.quaqua.util.Preferences.getString( Preferences.java:39)
at ch.randelshofer.quaqua.BasicQuaquaLookAndFeel.init SystemColorDefaults(BasicQuaquaLookAndFeel.java:21 1)
at ch.randelshofer.quaqua.tiger.Quaqua14TigerCrossPla tformLookAndFeel.initSystemColorDefaults(Quaqua14T igerCrossPlatformLookAndFeel.java:76)
at ch.randelshofer.quaqua.BasicQuaquaLookAndFeel.getD efaults(BasicQuaquaLookAndFeel.java:131)
at ch.randelshofer.quaqua.LookAndFeelProxy.getDefault s(LookAndFeelProxy.java:198)
at javax.swing.UIManager.setLookAndFeel(UIManager.jav a:537)
at javax.swing.UIManager.setLookAndFeel(UIManager.jav a:581)
at MOS6502.MOS6502.main(MOS6502.java:1293)