Hi Caroline,
I've checked the slf file with the HEX editor and it seems to be OK. It was produced by telemac3d v6p1.
The problem seems to be in line 393 of sisyphe.f:
CALL BIEF_SUITE(VARSOR,VARCL,NUMEN,SIS_FILES(SISHYD)%LU,
& SIS_FILES(SISHYD)%FMT,HIST,0,NPOIN,AT,
& TEXTPR,VARCLA,
& 0,TROUVE,ALIR0,.TRUE.,.TRUE.,MAXVAR,DT=DT)
The "ALIR0" contains only zeros which makes bief discard all the data, despite "VELOCITY V" and "VELOCITY U" are recognized.