I imported some photos in a directory, deleted that directory, and on restart,
the images were still listed in F-spot's browser (I assume this is intentional),
although the image content obviously was not there. I tried to delete the photos
by right clicking and choosing delete from disk, and got this exception:

Error loading image /home/dsd/beagle-index/05.jpg
 path == /home/dsd/beagle-index/06.jpg

Unhandled Exception: System.IO.DirectoryNotFoundException: Destination directory
not found: /home/dsd/beagle-index
in [0x000c6] System.IO.File:Delete (System.String path)
in <0x0003c> Photo:DeleteVersion (UInt32 version_id, Boolean remove_original)
in <0x001a7> MainWindow:HandleDeleteCommand (System.Object sender,
System.EventArgs args)
in (wrapper delegate-invoke)
System.MulticastDelegate:invoke_void_object_EventArgs (object,System.EventArgs)
in <0x000bb> GtkSharp.voidObjectSignal:voidObjectCallback (IntPtr arg0, Int32 key)
in (wrapper native-to-managed) GtkSharp.voidObjectSignal:voidObjectCallback
(intptr,int)
in <0x00000> <unknown method>
in (wrapper managed-to-native) Gtk.Application:gtk_main ()
in <0x00007> Gtk.Application:Run ()
in <0x00007> Gnome.Program:Run ()
in <0x0014a> Driver:Main (System.String[] args)

Index: src/PhotoStore.cs
===================================================================
RCS file: /cvs/gnome/f-spot/src/PhotoStore.cs,v
retrieving revision 1.63
diff -u -B -p -r1.63 PhotoStore.cs
--- src/PhotoStore.cs	22 May 2005 22:44:37 -0000	1.63
+++ src/PhotoStore.cs	23 May 2005 13:14:48 -0000
@@ -230,7 +230,8 @@ public class Photo : DbItem, IComparable
 			throw new Exception ("Cannot delete original version");
 
 		string path = GetVersionPath (version_id);
-		File.Delete (path);
+		if (File.Exists (path))
+			File.Delete (path);
 		PhotoStore.DeleteThumbnail (path);
 
 		version_names.Remove (version_id);
@@ -434,7 +435,9 @@ public class PhotoStore : DbStore {
 	public static void DeleteThumbnail (string path)
 	{
 		string uri = UriList.PathToFileUri (path).ToString ();
-		File.Delete (Thumbnail.PathForUri (uri, ThumbnailSize.Large));
+		string path = Thumbnail.PathForUri (uri, ThumbnailSize.Large);
+		if (File.Exists (path))
+			File.Delete (path);
 	}
 
 	public static void MoveThumbnail (string old_path, string new_path)