- It can happen that the list of file on disk it empty or not found at all. In such case, don't throw an exception like   "'NoneType' object has no attribute 'sort'". This fix force the download again nevertheless.
- It can happen that the list of file on disk it empty or not found at all. In such case, don't throw an exception like
  "'NoneType' object has no attribute 'sort'". This fix force the download again nevertheless.

horkko/biomaj-postgres,horkko/biomaj-postgres,horkko/biomaj,horkko/biomaj,genouest/biomaj,genouest/biomaj