this report has been filed here:

https://bugs.edge.launchpad.net/ubuntu/+source/brasero/+bug/292201

"
Steps to reproduce:

1. Open Brasero
2. Choose Data project
3. On the left pane is shown home directory with some files, the right pane is empty with a fade help text. I can select the files/directories on the left but I just can't drag them wherever I click and -drag--.

I am the owner of files and have rw/x permissions. I can add them if I click on "plus" sign or drag them directly from a Nautilus window.

This is what I get in terminal:

(brasero:26202): Gtk-CRITICAL **: gtk_drag_begin: assertion `targets != NULL' failed

(brasero:26202): GLib-GObject-CRITICAL **: g_object_set_data_full: assertion `G_IS_OBJECT (object)' failed

(brasero:26202): Gtk-CRITICAL **: gtk_drag_set_icon_default: assertion `GDK_IS_DRAG_CONTEXT (context)' failed
"

Thanks,