MDI Error

Hi All
I'm building a mdi app and on one of my forms when I do the following

Dim editor As New frmBookmark()
editor.lblbookmarkdir.Text = bookmarkpath
editor.MdiParent = Me
editor.Show()

Most of the time I get the following error
An unhandled exception of type 'System.OutOfMemoryException' occurred in system.windows.forms.dll

Additional information: Error creating window handle.

i only get this error with this form all the others work perfectly
any ideas

I am getting the same error as well, but from a different scenario. On a child form, I have a panel with some controls on it. The panel is not visible at the time of the form loading. I have a button that will set the panel.visible property to true. However, when I click on this button, I get the same error as mentioned in the post below. I've checked microsoft's web site, but can find nothing. Does anyone know what this error means and how to fix it?

I mean, the same error as the post ABOVE, not BELOW.

Code:

---

  Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    Me.IsMdiContainer = True
    Dim xFrm As New Form2()
    xFrm.MdiParent = Me
    xFrm.Show()
  End Sub

---

Enjoy