Cannot access a disposed object "Listbox"

Hey i got a search form in which i get a file name, pass to a friend function on my mainform, like such

''search form

'On Error Resume Next
Dim frm As ExpoSecServer = Me.Owner
Dim sName As String
sName = LB.SelectedItems.Item(0)
frm.LoadSearchResults(sName)
Me.Close()

'MainForm function

Friend Function LoadSearchResults(ByVal sPath As String)
'On Error Resume Next

If Trim(sPath) = "" Then Exit Function

LB.Items.Clear()
LB.Items.Add(sPath)

LB.Load(strFilePath & sPath, 20, 1, 1)
lblImage.Text = sPath
LV.Items.Add(sPath)
LB.VScrollInfo.Pos = LD.VScrollInfo.Max \ 3.8

If Err.Number <> 0 Then MessageBox.Show("Error Description : " & Err.Description, "Error Handler", MessageBoxButtons.YesNo, MessageBoxIcon.Error)

End Function

any idea why i crash, message is "Cannot access a disposed object named "ListBox" it loads image, and nowhere do i dispose my listbox, am i doing the owned form method wrong?

why does the mainform try to call the disposed listbox on the search form after the doubleclick event? if i put the search code in a button it works fine?