Build: NetBeans IDE 7.0 Beta 2 (Build 201102140001)
VM: Java HotSpot(TM) 64-Bit Server VM, 19.1-b02-334, Java(TM) SE Runtime Environment, 1.6.0_24-b07-334-10M3326
OS: Mac OS X

User Comments:
GUEST: Adding a tabbed pane to a frame

GUEST: Form View
 ---> JPanel (BorderLayout)  (BUGGY PARENT)
      ----> JSplitPane (on center)
             ----> JPanel
             ----> JPanel
      ----> JPanel (on south, FlowLayout LEFT)
 ---> JMenuBar


I try to add new JSplitPanel to 'BUGGY PARENT'.

GUEST: I was inserting a new JLabel in the Form. The layout of this form is set to AbsoluteLayout.

GUEST: Trying to drag n drop a JLabel into a JPanel in the Inspector view. the JPanel is layered underneath a JPanel [GridBagLayout] --> JPanel [GridBagLayout]

GUEST: I had made a layout of a JPanel in the GUI builder. The root panel contained another JPanel, with some components (two JLabels and a JTextArea + JScrollPane). I selected the components of the enclosed panel in the inspector, and tried to drag them up to the root panel, with the intention of doing away with the unnecessary enclosed panel.

GUEST: Added a custom component to palette. When I try to add the component to a JPanel, I get an exception.

rprichard: Adding a class (extension of JPanel) from the pallet

GUEST: This problem occurrs when I'm inserting a new component (JLabel, JTextField, JFormattedTextField, JButton, etc) in a JDialog with Abolute Layout, and the problem is "resolved" changing the layout to Free Layout, then insert de component, and then set Absoulte Layout again.




Stacktrace: 
java.lang.IllegalArgumentException: illegal component position
   at java.awt.Container.addImpl(Container.java:1035)
   at java.awt.Container.add(Container.java:959)
   at org.netbeans.modules.form.layoutsupport.AbstractLayoutSupport.addComponentsToContainer(AbstractLayoutSupport.java:617)
   at org.netbeans.modules.form.layoutsupport.LayoutSupportManager.addComponentsToContainer(LayoutSupportManager.java:668)
   at org.netbeans.modules.form.VisualReplicator.addComponent(VisualReplicator.java:391)
   at org.netbeans.modules.form.VisualReplicator.updateAddedComponents(VisualReplicator.java:357)