I click on "Options" => "Configure 4Pane." In the resulting popup dialog I select the tab "Display." The font selection is in the middle of the tab, see the attached screenshot. The input lines do not accept any input. All I can do is to click on "Change." When I do so, 4Pane crashes. Starting 4Pane from a terminal window yields the following output, right at the moment of the crash:
(4Pane:3401): GLib-GObject-WARNING **: invalid cast from `GtkScrolledWindow' to `GtkWindow'
My environment: gtk+ 2.16.2, wxGTK 2.8.10.