Ice.Mail.SmtpMailer issues with attachments

Epicor ERP 10
,
2

I was able to get the stream to close using one of the other .send methods, which uses an actual Stream instead of the file path in a string (and then putting that Stream in another using statement). Crisis averted.

using( Ice.Mail.SmtpMailer mailer = new Ice.Mail.SmtpMailer(this.Session))
{  
    using( FileStream attachmentStream = File.Open(attachmentPath, FileMode.Open))
    {
    var message = new Ice.Mail.SmtpMail();
    message.SetFrom( GetCompanyAddressAction(ttDMRCorAct_Row.Company) );
    message.SetTo(EmailTO);
    message.SetCC(EmailCC);
    message.SetBcc(EmailBCC);
    message.SetSubject(EmailSubject);
    message.SetBody(EmailBody);
    message.IsBodyHtml = true;
    //Add Attachments
    Dictionary<string, Stream> attachments = new Dictionary<string, Stream>();
    attachments.Add("CorrectiveAction" + ttDMRCorAct_Row.ActionID.ToString() + ".sysconfig" , attachmentStream);
    //Send 
    mailer.Send(message, attachments);
    }
}

File.Delete(attachmentPath);