>When you try to delete a user from the security UserAdmin form, you receive the following error:

>System.ArgumentOutOfRangeException: 'lstUsers' has a SelectedValue which is invalid because it does not exist in the list of items.

As it turns out, this is a pandemic problem with the ASP.NET 2.0 ListBox control. To fix the problem, add the following two lines of code to the top of the if() statement in your UserAdmin.aspx.cs form's LoadUserList() method:

private bool LoadUserList()
{
    if (this.oUser.GetAllUserNames() != null)
    {
	this.lstUsers.Items.Clear();
	this.lstUsers.SelectedValue = null;
        dsUsers = this.oUser.GetCurrentDataSet();
        this.lstUsers.DataSource = dsUsers.Tables[0];
        this.lstUsers.DataValueField = this.oUser.PrimaryKey;
        this.lstUsers.DataTextField = this.oUser.FullNameField;
        this.lstUsers.DataBind();
        return true;
    }
    return false;
}

>Also, when you are in security administration mode and you open the Control Security Configuration dialog, you cannot close the dialog using the close button without generating the following error:

Hmmm...if you turn off debugging it does actually close the form. I need to look further into this one.

Best Regards,