Hi onnz,
Thanks for the suggestion but I already did try to start over (I have a backup of all my credentials), seed and everything.. But nothing worked.
So before get into the node session I tried again but with a purge parameter (debian / electrum 2.7.9 : apt-get --pruge remove electrum) and it did work.. Nearly.. Because it actually didnt get /update to my last operation.
Now I have a I supposed-working wallet but without the money I had in the previous ?? And yes, before asked I did restore it with my seed.
Anyone has any suggestion ? ^^
Thanks