Index: app/models/attachment.rb
===================================================================
--- app/models/attachment.rb	(révision 2775)
+++ app/models/attachment.rb	(copie de travail)
@@ -265,14 +265,26 @@
 
   # Moves an existing attachment to its target directory
   def move_to_target_directory!
-    if !new_record? & readable?
-      src = diskfile
-      self.disk_directory = target_directory
-      dest = diskfile
-      if src != dest && FileUtils.mkdir_p(File.dirname(dest)) && FileUtils.mv(src, dest)
-        update_column :disk_directory, disk_directory
-      end
+    return unless !new_record? & readable?
+
+    src = diskfile
+    self.disk_directory = target_directory
+    dest = diskfile
+
+    return if src == dest
+
+    if !FileUtils.mkdir_p(File.dirname(dest))
+      echo "Could not mkdir #{File.dirname(dest)} !"
+      return
     end
+
+    if !FileUtils.mv(src, dest)
+      echo "Could not mv #{src} -> #{dest} !"
+      return
+    end
+
+    puts "#{src} -> #{dest}"
+    update_column :disk_directory, disk_directory
   end
 
   # Moves existing attachments that are stored at the root of the files