The ***** message required some action ?

this message is just a warning. If you want to avoid it, just execute this as root:
cat <<END | sudo tee /etc/security/limits.d/pharo.conf
*      hard rtprio  2
*      soft rtprio  2
END

P.S. I have to conclude that there is no solution?

For now, it is too early to have a conclusion because we do not know what caused the crash.
As Eliot said, it could be useful to get the crash.dmp file and the PharoDebug.log file.

The  crash.dmp  is not create.

( If i right do the command to create it :

From pharoLauncher i launch the corrupt image some time,
the  shell report the issue, but don't create the crash.dmp file).


For PharoDebug.log  i'm not in office, I'll check tomorrow.

Thanks,
Dario