Files and Folders plugin configuration panel not showing added directories in 0.8 alpha 1

I found problem with "Files and Folders" configurations.
1. After open - I don't see depth (all cells are empty).
In log:
(Do:31108): Gtk-WARNING **: /build/buildd/gtk+2.0-2.14.5/gtk/gtkliststore.c:608: Unable to convert from guint to gchararray

After replace line 47 in PathNodeView.cs from "Model = store = new ListStore (typeof (string), typeof (string));"
with "Model = store = new ListStore (typeof (string), typeof (uint));" depth will be shown, but any changes of this field won't stored.

2. List is not refreshed after adding folder. But I see it after reopen dialog.

Regards
Karol