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How to fix: Glade failed to load MyWindow.ui. The following required catalogs are unavailable.

If you use quickly to create a project and try to open the .ui files with Glade without using the "quickly design" command.

You may get an error like this:

To set the search catalog used by Glade, use this:


Replacing  "./data/ui " with the path that contains the Glade catalog files.

Note: for gtk2 projects use "GLADE_CATALOG_PATH=./data/ui glade-gtk2"


  1. Quickly source file located at /usr/share/quickly/templates/ubuntu-application


  1. This also fixes a problem with Ubuntu quickly. The same environment variable needs to be set up to allow the "quickly design" to open. If that was in any of the instructions originally, I missed it. I'm pretty sure I didn't do that originally.

    When trying to start the "quickly design", the glade gui would flash up, then quit. With --verbose set, I would get messages like:
    (glade:20725): GladeUI-CRITICAL **: glade_widget_set_object: assertion 'new_object == NULL || g_type_is_a (G_OBJECT_TYPE (new_object), glade_widget_adaptor_get_object_type (gwidget->priv->adaptor))' failed
    (glade:20725): GladeUI-CRITICAL **: glade_widget_adaptor_create_internal: assertion 'GLADE_IS_WIDGET (parent)' failed

    .... etc.



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