[gtkmm] Cryptic glademm warning

[ERDI Gergo <cactus cactus rulez org>]

What does this mean:

(guikachu:13544): libglade-WARNING **: could not find internal child
`notebook' in parent of type `gtkmm__GtkDialog'

The dialog I try to load seems to have (when looked at in glade-2) a
completely regular and normal notebook.

-- 
   .--= ULLA! =---------------------.   `We are not here to give users what
   \     http://cactus.rulez.org     \   they want'  -- RMS, at GUADEC 2001
    `---= cactus cactus rulez org =---'
Ébrenlét: unalmas időszak két szunya között