Parsing of IMAP Mime Emails with gb.mime fails

[Claus Dietrich <claus.dietrich@xxxxxxxxxx>]

Hi

I started to work on an IMAP-client user control and tried to parse a 
received Mime-Email with gb.mime. I always get the error "Unable to 
parse message".

The email is fetched from the server with

   <tag> fetch <n> BODY[]

and the parsing is done with

   Dim hMIME As MimeMessage

   hMime = New MimeMessage(File.Load("ImapMimeEmail.txt")) <--- where 
the error occurs

When I load ImapMimeEmail.txt in Thunderbird, the entire message is 
displayed properly including all attachments.

Does anyone have an idea what could be wrong?

Claus