Seems to be connected to the Thunderbird plugin. Can you get another backtrace with libc6-dbg and libglib2.0-0-dbg installed? Do you get any message in the terminal, when you call nautilus-sendto from there?
** Changed in: nautilus-sendto (Ubuntu) Importance: Undecided => Medium -- sendto crashes on trying to send a file https://launchpad.net/bugs/68504 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs