Jack refuses to start

I just had to do a re-install of my OS, and I can’t get Jack to start. Here’s the message window output:

21:53:50.839 Patchbay deactivated.
21:53:50.849 Statistics reset.
21:53:50.923 Startup script…
21:53:50.924 artsshell -q terminate
21:53:50.929 ALSA connection graph change.
sh: artsshell: command not found
21:53:51.328 Startup script terminated with exit status=32512.
21:53:51.328 JACK is starting…
21:53:51.328 /usr/bin/jackd -r -dalsa -r48000 -p1024 -n2 -D -Chw:1,2 -Phw:1
jackd 0.118.0
Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O’Quinn, Torben Hohn and others.
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
could not open driver .so ‘/usr/lib64/jack/jack_net.so’: libcelt0.so.0: cannot open shared object file: No such file or directory
JACK compiled with System V SHM support.
cannot stat() /dev/shm (No such file or directory)
cannot create server sockets
cannot create engine
21:53:51.339 JACK was started with PID=3475.
21:53:51.361 JACK was stopped successfully.
21:53:51.361 Post-shutdown script…
21:53:51.362 killall jackd
21:53:51.530 ALSA connection change.
jackd: no process killed
21:53:51.769 Post-shutdown script terminated with exit status=256.
21:53:53.536 Could not connect to JACK server as client. - Overall operation failed. - Unable to connect to server. Please check the messages window for more info.

@2handband: your system is not correctly installed: cannot stat() /dev/shm (No such file or directory) This directory should exist on more or less any Linux system. If its not, it means there is no support for shared memory, and thus no possibility to run JACK.

Okay, turns out to be a bug in the latest set of slackware -current updates. Once I recognized the problem it was easy to fix. Thanks!