Due to Seamonkey being removed from the ports, I've been trying to change to Thunderbird, but I'd like to keep some old mbox files, so I ran thunderbird --migration but I just get an empty window and two errors in my terminal: JavaScript error: chrome://global/content/bindings/wizard.xml, line 160: ReferenceError: MozXULElement is not defined JavaScript error: chrome://global/content/bindings/wizard.xml, line 127: TypeError: this._wizardButtons is undefined I tried the package for 11.3 as well as compiling the port, same result. my build options : ALSA : off CANBERRA : off DBUS : off DEBUG : off FFMPEG : off GCONF : off JACK : off LIBPROXY : off LIGHTNING : on OPTIMIZED_CFLAGS: on PROFILE : off PULSEAUDIO : off SNDIO : off TEST : off