Kill

Fixed in the latest update 1.21.74.

Same here Ubuntu 17.10 Firefox 60.0.1 Did manage to attach gdb to the process and get a backtrace if it helps: gdb -p 2556 Attaching to process 2556 [New LWP 6890] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". 0x00007fd135203951 in __GI___poll (fds=0x7ad240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory. (gdb) bt #0 0x00007fd135203951 in __GI___poll (fds=0x7ad240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007fd13207c169 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007fd13207c27c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x00007fd135f53f07 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/Enpass/libs/libQt5Core.so.5 #4 0x00007fd135f0276a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /opt/Enpass/libs/libQt5Core.so.5 #5 0x00007fd135f0a5fd in QCoreApplication::exec() () from /opt/Enpass/libs/libQt5Core.so.5 #6 0x0000000000403b1c in main ()