Code Aster problem No available versions found on 'localhost'.

I installed CAELinux_2020 and get this error when opening AsterStudy:

No available versions found on 'localhost'.
Previous server is selected: ''.

After some google searcing I tried to do some fidling with JobManager Recource Manager but it is not saving any new configurations and does not let make any changes to defaul localhost file.

Is that some configuration error I have made? I cannot find any guides how to get this working.

edit:
If I try to run case in ASTK I have this error:
can't read "astk::config(-1,interactif_tpsmax)": no such element in array
can't read "astk::config(-1,interactif_tpsmax)": no such element in array
while executing
"set val $astk::config($serv,$val)"
(procedure "lance_calcul" line 67)
invoked from within
"lance_calcul $astk::profil(batch)"
(procedure "go_calcul" line 25)
invoked from within
"go_calcul "
invoked from within
".fen.satellite.bas.go invoke"
("uplevel" body line 1)
invoked from within
"uplevel #0

"
(procedure "tk::ButtonUp" line 22)
invoked from within
"tk::ButtonUp .fen.satellite.bas.go"
(command bound to event)

edit t2
Running Caelinux from usb stick everything is running fine and I can create Aster case in Salome Meca and compute it.

Installed Caelinux 2018 and it is working.