Crash when slide-show over non-existing images

Binary package hint: f-spot

- 3 images in total in an f-spot installation (v0.1.11) under Dapper Drake.
- Deleted all images from the ~/Photo folder outside from f-spot.
- Launch f-spot and start slideshow with View | Slideshow.
- Instead of first image a white square with a "?" is shown.
- On loading the second image, error message appears (see below)
- After a few seconds error message and al lf-spot windows close.
- crashed.
This is 100% reproducable.

First lines of error message (did not let me copy/paste all of it):

An unhandled exception was thrown: Object reference not set to an instance of an object

in <0x0012f> FSpot.SlideView:CrossFade (Gdk.Pixbuf,Gdk.Pixbuf,Gdk.Pixbuf,double)
in <0x00046> FSpot.SlideView:Blend (Gdk.Pixbuf,Gdk.Pixbuf,Gdk.Pixbuf,double)
in <0x001d8> FSpot.SlideView:HandleTweenIdle ()
in <0x00037> (wrapper delegate-invoke) System.MulticastDelegate:invoke_bool ()
in <0x0002a> IdleProxy:Handler ()
in <0x00036> (wrapper native-to-managed) IdleProxy:Handler ()
in (unmanaged) 0xb7da1bf1
in <0x00004> (wrapper managed-to-native) Gtk.Application:gtk_main ()
in <0x00007> Gtk.Application:Run ()
in <0x00007> Gnome.Program:Run ()
in <0x00542> FSpot.Driver:Main (string[])