error in download photos (cannon raw images)

[Vassilis]

Binary package hint: f-spot

I plug in my canon 400D and Ubuntu(10.04) probed me to download photos with f-spot. When I press the button download, it show me an error and I try to skip the first photo but nothing happens. I press cancel and show me this message.

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

  at FileImportBackend.Prepare () [0x00000] in <filename unknown>:0
  at ImportCommand.DoImport (.ImportBackend imp) [0x00000] in <filename unknown>:0
  at ImportCommand.ImportFromPaths (.PhotoStore store, System.String[] paths, FSpot.Tag[] tags, Boolean copy) [0x00000] in <filename unknown>:0
  at ImportCommand.ImportFromPaths (.PhotoStore store, System.String[] paths, FSpot.Tag[] tags) [0x00000] in <filename unknown>:0
  at FSpot.CameraFileSelectionDialog.ImportFiles () [0x00000] in <filename unknown>:0
  at FSpot.CameraFileSelectionDialog.Run () [0x00000] in <filename unknown>:0
  at MainWindow.ImportCamera (System.String camera_device) [0x00000] in <filename unknown>:0
  at FSpot.Core+ImportCommand.Execute () [0x00000] in <filename unknown>:0
  at FSpot.Core.Import (System.String path) [0x00000] in <filename unknown>:0
  at FSpot.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
.NET Version: 2.0.50727.1433

Assembly Version Information:

SemWeb (0.7.1.0)
libgphoto2-sharp (1.0.3821.22476)
SmugMugExport (0.0.0.0)
ScreensaverConfig (0.0.0.0)
CDExport (0.0.0.0)
FlickrExport (0.0.0.0)
GalleryExport (0.0.0.0)
FolderExport (0.0.0.0)
HashJob (0.0.0.0)
PicasaWebExport (0.0.0.0)
glade-sharp (2.12.0.0)
System.Core (3.5.0.0)
FSpot.Bling (0.0.0.0)
pango-sharp (2.12.0.0)
gtk-sharp-beans (2.14.0.0)
gnome-sharp (2.24.0.0)
System.Transactions (2.0.0.0)
System.Data (2.0.0.0)
Mono.Data.SqliteClient (2.0.0.0)
System.Configuration (2.0.0.0)
FSpot.Widgets (0.0.0.0)
System.Xml (2.0.0.0)
NDesk.DBus.Proxies (0.0.0.0)
gconf-sharp (2.24.0.0)
FSpot.Query (0.0.0.0)
FSpot.JobScheduler (0.0.0.0)
gdk-sharp (2.12.0.0)
NDesk.DBus.GLib (1.0.0.0)
NDesk.DBus (1.0.0.0)
gnome-vfs-sharp (2.24.0.0)
Cms (0.0.0.0)
FSpot.Core (0.0.0.0)
FSpot.Platform (0.0.0.0)
Mono.Posix (2.0.0.0)
FSpot.Utils (0.0.0.0)
atk-sharp (2.12.0.0)
gtk-sharp (2.12.0.0)
Mono.Addins (0.4.0.0)
System (2.0.0.0)
Mono.Addins.Setup (0.4.0.0)
glib-sharp (2.12.0.0)
f-spot (0.6.1.5)
mscorlib (2.0.0.0)

Platform Information: Linux 2.6.32-29-generic x86_64 unknown GNU/Linux

Distribution Information:

[/etc/debian_version]
squeeze/sid

[/etc/lsb-release]
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=10.04
DISTRIB_CODENAME=lucid
DISTRIB_DESCRIPTION="Ubuntu 10.04.2 LTS"