Lightning does not work in Seamonkey 2.49.1

[Miroslav Lachman]

I have Seamonkey 2.49.1 installed from my poudrier build. I have 
selected LIGHTNING option but it doesn't work. I don't see calendar and 
tasks anywhere in the menus. I tried installing Lightbird extension but 
it doesn't work too.

Is there anybody with working calendar in Seamonkey?

FreeBSD 10.4-RELEASE-p5 amd64 GENERIC


seamonkey-2.49.1_7
Name           : seamonkey
Version        : 2.49.1_7
Installed on   : Fri Mar 23 02:00:15 2018 CET
Origin         : www/seamonkey
Architecture   : FreeBSD:10:amd64
Prefix         : /usr/local
Categories     : mail irc news ipv6 editors www
Licenses       :
Maintainer     : gecko at FreeBSD.org
WWW            : http://www.mozilla.org/projects/seamonkey/
Comment        : The open source, standards compliant web browser
Options        :
         ALSA           : on
         BUNDLED_CAIRO  : off
         CANBERRA       : on
         DBUS           : on
         DEBUG          : off
         DTRACE         : on
         FFMPEG         : on
         GCONF          : on
         GTK2           : off
         GTK3           : on
         INTEGER_SAMPLES: off
         JACK           : on
         LDAP           : off
         LIBPROXY       : off
         LIGHTNING      : on
         OPTIMIZED_CFLAGS: on
         PROFILE        : off
         PULSEAUDIO     : on
         RUST           : off
         SNDIO          : off
         TEST           : off
Shared Libs required:

         libhunspell-1.6.so.0
         libevent-2.1.so.6
         libvpx.so.4
         libplc4.so
         libXcomposite.so.1
         libxcb.so.1
         libgdk_pixbuf-2.0.so.0
         libgio-2.0.so.0
         libssl3.so
         libXfixes.so.3
         libnss3.so
         libogg.so.0
         libv4l2.so.0
         libgobject-2.0.so.0
         libnssutil3.so
         libplds4.so
         libharfbuzz.so.0
         libstartup-notification-1.so.0
         libX11.so.6
         libdbus-1.so.3
         libXdamage.so.1
         libnspr4.so
         libXt.so.6
         libgraphite2.so.3
         libicuuc.so.60
         libpng16.so.16
         libicui18n.so.60
         libvorbis.so.0
         libglib-2.0.so.0
         libfontconfig.so.1
         libsmime3.so
         libgdk-x11-2.0.so.0
         libgdk-3.so.0
         libXrender.so.1
Annotations    :
         FreeBSD_version: 1004000
         cpe            : 
cpe:2.3:a:mozilla:seamonkey:2.49.1:::::freebsd10:x64:7
         no_provide_shlib: yes
         repo_type      : binary
         repository     : codelab
Flat size      : 126MiB


Kind regards
Miroslav Lachman