Could not save a text part: Internal error in get_stream

[JohnJackDoe tele2 de]

Could not save a text part: Internal error in get_stream

Dear list members,

Yesterday night I compiled and installed Balsa 2.5.3a-76-ga1b1465 from  
GIT. Compilation and installation passed without failure messages. The  
maildir problem is handled in a different mail.

Balsa was started in debug mode with 'G_MESSAGES_DEBUG=all  
/usr/local/bin/balsa'. The log did not show failures. I sent a test  
message to an outside mailbox and retrieved retrieved it later. So far  
so good. The downloaded and stored email showed no subject and a size  
of 0 (zero) bytes. Double clicking on the mail produced the message  
'Could not save a text part: Internal error in get_stream'. The debug  
window produced the report below. I checked the file in the maildir  
inbox - it was empty! Any ideas?
--
Best regards,

John Jack Doe

me@Netbook-11:~$ G_MESSAGES_DEBUG=all /usr/local/bin/balsa
(balsa:1979): Gtk-DEBUG: Connecting to session manager
(balsa:1979): Gtk-DEBUG: Registering client 'balsa' ''

(balsa:1979): Gtk-WARNING **: Failed to register client:  
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name  
org.gnome.SessionManager was not provided by any .service files
** Message: init gpgme version 1.6.0
** Message: protocol OpenPGP: engine /usr/bin/gpg2 (home (null),  
version 2.1.11)
** Message: protocol CMS: engine /usr/bin/gpgsm (home (null), version  
2.1.11)
** Message: protocol GPGCONF: engine /usr/bin/gpgconf (home (null),  
version 2.1.11)
** Message: protocol Assuan: engine /home/me/.gnupg/S.gpg-agent (home  
!GPG_AGENT, version 1.0)
** Message: protocol UIServer: engine /home/me/.gnupg/S.uiserver (home  
(null), version 1.0)
** Message: protocol Spawn: engine /nonexistent (home (null), version  
1.0)
** Message: gpg-agent found: /home/me/.gnupg/S.gpg-agent:0:1
** Message: OpenPGP protocol supported
** Message: CMS (aka S/MIME) protocol supported
Network is available   (Mo 24 Apr 2017 13:59:28 CEST)

** (balsa:1979): CRITICAL **: g_mime_part_check_rfc2440: assertion  
'wrapper' failed

** (balsa:1979): CRITICAL **: g_mime_part_check_rfc2440: assertion  
'wrapper' failed

(balsa:1979): gmime-CRITICAL **: internet_address_list_to_string:  
assertion 'IS_INTERNET_ADDRESS_LIST (list)' failed