Something happened during the reftable generation

[MoutonAlice]

Hi I have been running diyabc successfully several times on the computer however now I am running into an error message.
"Something happened during the reftable generation.
Program of threads '06juilletbis reference table generated" exited (with return code 1) unsuccessfully.
sOk[ipart]=18

fermeture du fichier"

I can't find any explanation of this error anywhere. Would you be able to give me some advices? I would highly appreciate it.
Best regards
Alice