Hi Avi, 
    I sent this message

     > merci...for the fast reply.  It turns out to be my fault not a FileSystem fault. 
     >   I  didn't  followed the Package Info naming convention, I was just typing 
     >   a partial name thinking that all the classification begining with this truncated
     >   name would have been selected by Monticello....sorry.
    
       > the #binary message still happen randomly, I don't know why yet,
       > but my packages seem good..so I will live with until I understand what is happening.
    
      >  Thank you for your reply.
      
      But I was wrong, 
            the problem is still there, 
            and you were right, 
                                    ...it seems to be about file.
            and more about Seaside package than Monticello
      
      For what I can understand, no stream are ever created when trying to fileOut a 'Seaside' classification. 
      
      With a Browser (standard one) I can make a 'fileOut' of my classes under a classification 
      like 'MesLogiciels-',    but if I try to fileOut the classification 'Seaside/Examples-Store'
      I always get a debugger with a stream  'nil'.
      
      This is the same if I use a Monticello Browser to 'export package'....the stream is 'nil' so nothing
      append when I try to export 'a Seaside' package....
      
      Any hints !