Dear AFNI experts,
I'm trying to run realtime demo 1 in the directory: AFNI_data6/realtime.demos. When I launch the script from the demo_1_run1 directory like this:
./demo.1.run1

I get this output:
Precompiled binary linux_ubuntu_16_64: Jan 6 2023 (Version AFNI_23.0.00 'Commodus')

Thanks go to B Feige for advice and help

Initializing: X11[The X.Org Foundation v 12101003].. Widgets...... Input files:[Global]
** Searching subdirectories of './' for data
AFNI_GLOBAL_SESSION = /usr/local/afni/bin/ 77 datasets
image count = 77
Timeseries.1D = 0 files read
.[tc]sv data = 0 files read
Path(s) to be searched for plugins:
/usr/local/afni/bin
** RTM: clearing Mask_Vals setting from Motion_Only
as AFNI_REALTIME_MP_HOST_PORT is unset
-- no T2star_ref from env

Plugins = 49 libraries read
write compress= GZIP
RT: AFNI realtime plugin is active; cf. README.realtime document

++ NOTE: This version of AFNI was built Jan 6 2023 ++
++ NOTE: 'Define Markers' is hidden: right-click 'DataDir' to see it
++ NOTE: Use '-seehidden' option to see which plugins are hidden
++ AFNI is detached from terminal.
RT: starting to listen for control stream.
[1] + Done afni -rt


ready to run Dimon
press enter to proceed...

Dimon version 4.30 (November 2, 2022) running, use <ctrl-c> to quit...

RT:---------------------------------------
RT: connected to control stream 127.0.0.1
RT: version 23 Jan 2020: ROIs_and_data
RT: init RT input via control channel
Can't connect? tcp_connect[connect]: Connection refused
RT: waiting for data stream to become good.
ART: comm link to afni established at <localhost>
-- scanning for first volume

-- first volume found (34 slices)
RT: receiving image metadata=472 bytes
## PARSE RT Detrend: RT Options mode 0x0 polort -1 fwhm 0
-- scanning for additional volumes...
-- run 3: 1 2 RT: sending dataset rt.__001+orig with 2 bricks
to AFNI[A], session /usr/local/afni/bin/

Fatal Signal 11 (SIGSEGV) received
AFNI_autorange_label
AFNI_reset_func_range
AFNI_setup_viewing
AFNI_initialize_view
AFNI:main
Bottom of Debug Stack
** AFNI version = AFNI_23.0.00 Compile date = Jan 6 2023
** [[Precompiled binary linux_ubuntu_16_64: Jan 6 2023]]
** Program Death **
** If you report this crash to the AFNI message board,
** please copy the error messages EXACTLY, and give
** the command line you used to run the program, and
** any other information needed to repeat the problem.
** You may later be asked to upload data to help debug.
** Crash log is appended to file /home/wgraves/.afni.crashlog
3 ART: ** failed to transmit data to afni @ localhost
- closing afni connection
- iochan error: iochan_goodcheck: no longer alive
ART: exit: closing afni control channel
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 . . .

final run statistics:
volume info :
slices : 34
z_first : -43.93
z_last : 71.57
z_delta : 3.5
oblique : no
mos_nslices : 0

run # 3 : volumes = 67, first file (#0) = ../../EPI_run1/8HRBRAINAx2DGRE-00001.dcm

I'd appreciate any help you could give!

Best,
Will