OS: Windows Server 2008, 64bit
Found in application based on NetBeans Platform
When trying to open the "advanced options" from the options dialog, the 
"advanced options" dialog stays empty (besides initializing...) and is not 
usable.
No problem on WinXP 32bit

Compiler: HotSpot 64-Bit Server Compiler
Heap memory usage: initial 24,0MB maximum 455,1MB
Non heap memory usage: initial 23,2MB maximum 132,0MB
Garbage collector: PS Scavenge (Collections=6 Total time spent=0s)
Garbage collector: PS MarkSweep (Collections=0 Total time spent=0s)
Classes: loaded=3766 total loaded=3766 unloaded 0
INFO [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 2.136.317.952
INFO [null]: Total physical memory 2.136.317.952
WARNUNG [org.openide.filesystems.Ordering]: Not all children in OptionsDialog/ marked with the position attribute:
[Advanced], but some are: [com-sun-tools-visualvm-core-options-GeneralOptionsCategory.instance]
SCHWERWIEGEND [global]
java.lang.NullPointerException
	at sun.swing.table.DefaultTableCellHeaderRenderer.getColumnSortOrder(DefaultTableCellHeaderRenderer.java:104)
	at
com.sun.java.swing.plaf.windows.WindowsTableHeaderUI$XPDefaultRenderer.getTableCellRendererComponent(WindowsTableHeaderUI.java:108)
	at org.openide.explorer.view.TableSheetCell.getTableCellRendererComponent(TableSheetCell.java:280)
	at org.openide.explorer.view.TreeTableView$SortingHeaderRenderer.getTableCellRendererComponent(TreeTableView.java:1589)
	at javax.swing.plaf.basic.BasicTableHeaderUI.getHeaderRenderer(BasicTableHeaderUI.java:663)
	at javax.swing.plaf.basic.BasicTableHeaderUI.getHeaderHeight(BasicTableHeaderUI.java:698)
	at javax.swing.plaf.basic.BasicTableHeaderUI.createHeaderSize(BasicTableHeaderUI.java:727)
	at javax.swing.plaf.basic.BasicTableHeaderUI.getPreferredSize(BasicTableHeaderUI.java:758)
	at javax.swing.JComponent.getPreferredSize(JComponent.java:1632)
	at org.openide.explorer.view.TreeTable$TreeTableHeader.getPreferredSize(TreeTable.java:869)
	at javax.swing.ViewportLayout.preferredLayoutSize(ViewportLayout.java:78)
	at java.awt.Container.preferredSize(Container.java:1616)
	at java.awt.Container.getPreferredSize(Container.java:1601)