Bug#643642: glade: Glade3 save GtkVBox as GtkBox

[Magnus Danielson]

Hi again,

It was however a pitty that when the glade file was loaded with the 
wrong library, I got a segmentation fault without a meaningful comment 
that "ERROR: GtkBox is unknown object in <list of libraries>" which 
would have been much more helpful, but since I had a clue I got around it.

So, a recommendation would be to add that, so that attention to the real 
fault would be more direct.

Cheers,
Magnus