Comment 9 for bug 1392668

- crash reproduced on Windows XP, Inkscape rev 14391
- not sure if this is precisely the same bug, but probably related.

- open the attached file which already has a duplicate gradient defined in it.
- open the Fill & Stroke dialog, select the ellipse object
- click on the first gradient, # 4167
- hit PageDown button and get attached crash message

Gtk:ERROR:gtkrbtree.c:967:_gtk_rbtree_node_find_offset: assertion failed: (node->left)

the second gradient was produced as a duplicate of the first by using the + button. It is important to save this file before clicking on anything, in order to produce the crash. Clicking on the second gradient will normally cause it to disappear, so it needs to be saved before attempting to use the gradient.