fatal "not directory found" error at pass 3a of reiserfsck

[Alain Knaff]

We have a corrupted reiserfs filesystem here which can't even be repaired with 
--rebuid-tree.

The error messages happens at pass 3a:

Pass 3a (looking for lost dir/files):
####### Pass 3a (lost+found pass) #########
Looking for lost directories:
lost+found.c 116 _look_for_lost
not directory found
Aborted


What can we do to retrieve our files?

Thanks,

Alain