Confirming the same issue on Fedora 27 with shutter 0.93.1
// First instance starts - OK
// Second start throws this
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!
(shutter:5439): Unique-DBus-WARNING **: Error while sending message: Message recipient disconnected from message bus without replying
INFO: There is already another instance of Shutter running!
// And the first one crashes as well with this:
Segmentation fault (core dumped)
// Debug of the first one
(gdb) run /usr/bin/shutter
Starting program: /usr/bin/perl /usr/bin/shutter
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!
GdkPixbuf-LOG **: gdk_pixbuf_from_pixdata() called on: at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Dimensions: 16 x 16 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Rowstride: 64, Length: 1048 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: gdk_pixbuf_from_pixdata() called on: at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Dimensions: 16 x 16 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Rowstride: 64, Length: 1048 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 520, <DATA> line 19.
[New Thread 0x7fffdc9a5700 (LWP 6348)]
[New Thread 0x7fffd7fff700 (LWP 6349)]
[New Thread 0x7fffd77fe700 (LWP 6350)]
File::Glob::glob() will disappear in perl 5.30. Use File::Glob::bsd_glob() instead. at /usr/bin/shutter line 8199.
[New Thread 0x7fffd6b76700 (LWP 6351)]
[New Thread 0x7fffd5b50700 (LWP 6352)]
GdkPixbuf-LOG **: gdk_pixbuf_from_pixdata() called on: at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Dimensions: 14 x 14 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Rowstride: 56, Length: 808 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: gdk_pixbuf_from_pixdata() called on: at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Dimensions: 14 x 14 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Rowstride: 56, Length: 808 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 4505.
[Thread 0x7fffd77fe700 (LWP 6350) exited]
[Thread 0x7fffd5b50700 (LWP 6352) exited]
[Thread 0x7fffd6b76700 (LWP 6351) exited]
Thread 1 "perl" received signal SIGSEGV, Segmentation fault.
0x00007ffff6788d71 in __strlen_avx2 () from /lib64/libc.so.6
// Debug of the second one:
(gdb) run /usr/bin/shutter
Starting program: /usr/bin/perl /usr/bin/shutter
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!
(shutter:6362): Unique-DBus-WARNING **: Error while sending message: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
INFO: There is already another instance of Shutter running!
[Inferior 1 (process 6362) exited normally]
Confirming the same issue on Fedora 27 with shutter 0.93.1
// First instance starts - OK
// Second start throws this
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!
(shutter:5439): Unique-DBus-WARNING **: Error while sending message: Message recipient disconnected from message bus without replying
INFO: There is already another instance of Shutter running!
// And the first one crashes as well with this:
Segmentation fault (core dumped)
// Debug of the first one libthread_ db.so.1" .
(gdb) run /usr/bin/shutter
Starting program: /usr/bin/perl /usr/bin/shutter
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!
GdkPixbuf-LOG **: gdk_pixbuf_ from_pixdata( ) called on: at /usr/bin/shutter line 520, <DATA> line 19. from_pixdata( ) called on: at /usr/bin/shutter line 520, <DATA> line 19. :bsd_glob( ) instead. at /usr/bin/shutter line 8199. from_pixdata( ) called on: at /usr/bin/shutter line 4505. from_pixdata( ) called on: at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Dimensions: 16 x 16 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Rowstride: 64, Length: 1048 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: gdk_pixbuf_
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Dimensions: 16 x 16 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Rowstride: 64, Length: 1048 at /usr/bin/shutter line 520, <DATA> line 19.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 520, <DATA> line 19.
[New Thread 0x7fffdc9a5700 (LWP 6348)]
[New Thread 0x7fffd7fff700 (LWP 6349)]
[New Thread 0x7fffd77fe700 (LWP 6350)]
File::Glob::glob() will disappear in perl 5.30. Use File::Glob:
[New Thread 0x7fffd6b76700 (LWP 6351)]
[New Thread 0x7fffd5b50700 (LWP 6352)]
GdkPixbuf-LOG **: gdk_pixbuf_
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Dimensions: 14 x 14 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Rowstride: 56, Length: 808 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: gdk_pixbuf_
GdkPixbuf-LOG **: Encoding raw at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Dimensions: 14 x 14 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Rowstride: 56, Length: 808 at /usr/bin/shutter line 4505.
GdkPixbuf-LOG **: Copy pixels == false at /usr/bin/shutter line 4505.
[Thread 0x7fffd77fe700 (LWP 6350) exited]
[Thread 0x7fffd5b50700 (LWP 6352) exited]
[Thread 0x7fffd6b76700 (LWP 6351) exited]
Thread 1 "perl" received signal SIGSEGV, Segmentation fault.
0x00007ffff6788d71 in __strlen_avx2 () from /lib64/libc.so.6
// Debug of the second one: libthread_ db.so.1" .
(gdb) run /usr/bin/shutter
Starting program: /usr/bin/perl /usr/bin/shutter
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/
WARNING: gnome-web-photo is missing --> screenshots of websites will be disabled!
(shutter:6362): Unique-DBus-WARNING **: Error while sending message: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
INFO: There is already another instance of Shutter running!
[Inferior 1 (process 6362) exited normally]
Let me know if more info required.