java.lang.AssertionError: Object org.netbeans.modules.form.editors2.FontEditor$NbFont@1e067cc is instanceof Font or null
	at org.netbeans.beaninfo.editors.FontEditor.setValue(FontEditor.java:99)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveProperty(GandalfPersistenceManager.java:3774)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveProperties(GandalfPersistenceManager.java:3709)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveComponent(GandalfPersistenceManager.java:3627)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveVisualComponent(GandalfPersistenceManager.java:3388)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3178)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveContainer(GandalfPersistenceManager.java:3220)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3175)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveContainer(GandalfPersistenceManager.java:3220)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveAnyComponent(GandalfPersistenceManager.java:3175)
	at org.netbeans.modules.form.GandalfPersistenceManager.saveForm(GandalfPersistenceManager.java:3047)
	at org.netbeans.modules.form.FormEditor.saveFormData(FormEditor.java:321)
	at org.netbeans.modules.form.FormEditorSupport.saveDocument(FormEditorSupport.java:274)
	at org.netbeans.modules.form.FormEditorSupport$8.save(FormEditorSupport.java:1238)
	at org.netbeans.core.NbTopManager.saveAll(NbTopManager.java:261)
	at org.netbeans.core.NbTopManager.access$300(NbTopManager.java:68)
	at org.netbeans.core.NbTopManager$NbLifecycleManager.saveAll(NbTopManager.java:418)
	at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:356)
[catch] at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:129)