We are currently on Blackpearl 4.5 Update 1320.  We are trying to install Update 1420 in our test environment.  We encounter the following error after clicking Next on the Service Accounts Configuration step:

mscorlib

Exception: Index was out of range. Must be non-negative and less than the size of the collection.

Parameter name: index

StackTrace:    at System.Collections.ArrayList.get_Item(Int32 index)

   at System.DirectoryServices.ResultPropertyValueCollection.get_Item(Int32 index)

   at SourceCode.Install.Common.MailServer..ctor(SearchResult result)

   at SourceCode.Install.Common.Network.GetMailServers()

   at SourceCode.SetupManager.UI.Panels.IncomingMailPanel.LoadMailServers()

   at SourceCode.SetupManager.UI.Panels.IncomingMailPanel.PopulateControls()

   at SourceCode.SetupManager.UI.Panels.IncomingMailPanel.IncomingMailPanelLoad(Object sender, EventArgs e)

   at System.Windows.Forms.UserControl.OnLoad(EventArgs e)

   at System.Windows.Forms.UserControl.OnCreateControl()

   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)

   at System.Windows.Forms.Control.CreateControl()

   at System.Windows.Forms.Control.SetVisibleCore(Boolean value)

   at System.Windows.Forms.Control.set_Visible(Boolean value)

   at SourceCode.SetupManager.Panels.BasePanel.PanelActivate()

   at SourceCode.SetupManager.UI.Panels.IncomingMailPanel.PanelActivate()

   at SourceCode.SetupManager.Main.navigateNext()

I have an open ticket with K2 Support.  I figured I'd check here as well.  Any thoughts?