[GRASS-dev] SubGroup do not found

hi,

when I write

i.maxlik group=group96 subgroup=SubGroup96 sigfile=sigClassif96 class=classifgroupIN96 reject=classifgroupREJECT96
grass works (message : done)
but with gensig I write
i.gensig trainingmap=lookout246bsnap2raster@ventoux_sud_quentin group=group96 subgroup=SubGroup96 signaturefile=signature96

i have the message:
Subgroup [SubGroup96] not found

and I have this file (i wath in the grass folders) and I found the file.

who can i help me, please ?

thanks a lots