Hello,

This is a licensed version of Secure Mail component. I'm using the same code indicated in S/MIME Tutorial page as follows:

` private void buttonLoadEml_Click(object sender, EventArgs e) { try { string emlFileName = GetEmlFilePath(); if (string.IsNullOrEmpty(emlFileName)) { return; } MailMessage message = new MailMessage(); message.Load(emlFileName);

            // decrypt the message if it is encrypted 
            if (message.IsEncrypted)
            {
                if (!message.CanDecrypt)
                    throw new ApplicationException
                    (
                      "Message cannot be decrypted. You do not have the private key."
                    );

                message.Decrypt();
            }

            this.textBox1.Text = message.BodyText;
        }
        catch (Exception ex)
        {
            this.textBox1.Text = ex.ToString();
        }
    }

`

Here are the exception details:

System.FormatException: Input string was not in a correct format. at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String format, Object[] args) at System.String.Format(IFormatProvider provider, String format, Object[] args) at AzIwhU.bjJTWY.bbBzTnZ(Byte[] ) at Rebex.Security.Cryptography.Pkcs.EnvelopedData.Decrypt() at Rebex.Mime.MimeEntity.Decrypt() at Rebex.Mail.MailMessage.Decrypt() at CertificateEnumerator.MainForm.buttonLoadEml_Click(Object sender, EventArgs e) in C:\Users\inm\Documents\Visual Studio 2008\Projects\CertificateEnumerator\CertificateEnumerator\MainForm.cs:line 173