SMTP Mail Attachment sending issue

Hi All!

I have the following issue when I send e-mail from BC14. The mail has one or more of the following parameters: recipients, CC, BCC and Attachments.
I have an issue with the Attachments: the files are uploading to a BLOB field, I can retrive the size of the file and from there I can download the correct file (png, txt, pdf...), but when I send the mail to my e-mail address, I get the attached files, but each is a 300 byte corrupted file.

DOTNETglobal1: System.Net.Mail.Attachment.'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
DOTNETglobal2: System.Net.Mime.ContentDisposition.'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'
DOTNETglobal3: System.Net.Mail.MailMessage.'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'

page.CALCFIELDS(blob_field);
page.blob_field.CREATEINSTREAM(stream);

DOTNETglobal1 := DOTNETglobal1.Attachment(stream,page.file_name_field);
DOTNETglobal2 := DOTNETglobal1.ContentDisposition();
DOTNETglobal2.Size(page.file_size_field);
DOTNETglobal3.Attachments.Add(DOTNETglobal1);

Thanks for the help in advance!