This message has no part with a supported content type

[André Klitzing]

Binary package hint: gnubiff

Some mails can't be previewed and gnubiff will show an error [This message has no part with a supported content type] instead.
I can't see any mistake in mail header.

Debug:
** Message: [1] SEND(imap.1und1.de:993): A00006 FETCH 7 (BODY.PEEK[HEADER.FIELDS (DATE FROM SUBJECT)])
** Message: [1] RECV(imap.1und1.de:993): * 7 FETCH (BODY[HEADER.FIELDS (DATE FROM SUBJECT)] {116}\u000d
** Message: [1] RECV(imap.1und1.de:993): (message) +++++
** Message: [1] SEND(imap.1und1.de:993): A00007 FETCH 7 (BODYSTRUCTURE)
** Message: [1] RECV(imap.1und1.de:993): * 7 FETCH (BODYSTRUCTURE ("TEXT" "html" ("charset" "iso-8859-1") NIL NIL "8BIT" 578 30 NIL NIL NIL NIL))\u000d
** Message: [1] Part= size=319462511, encoding=
** Message: [1] RECV(imap.1und1.de:993): A00007 OK FETCH finished.\u000d

[André Klitzing (misery)]

Author on upstream bugtracker
------

Date: 2008-04-20 01:10
Sender: sowadart

The message has only one part with content type "text/html" (see result of
FETCH command). Gnubiff currently only supports content type "text/plain"
for previewing message content, so the error message is correct.