[solved]f-spot error

An unhandled exception was thrown: Sorry, couldn't start F-Spot.

  at FSpot.Driver.Main (System.String[] args) [0x00000] in <filename unknown>:0
.NET Version: 2.0.50727.1433

Assembly Version Information:

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)
System.Core (3.5.0.0)
atk-sharp (2.12.0.0)
gtk-sharp (2.12.0.0)
Mono.Addins (0.6.0.0)
System (2.0.0.0)
Mono.Addins.Setup (0.6.0.0)
glib-sharp (2.12.0.0)
f-spot (0.6.1.5)
mscorlib (2.0.0.0)

Platform Information: Linux 2.6.32-35-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 10.04.3 LTS"

# If you use badgerports ppa, remove it
#
sudo apt-get remove libmono*

sudo apt-get update

sudo apt-get install tomboy gbrainy f-spot

# Solve this problem. hopemy explaination help
#
#