Lost Last FM App from App Gallery

I have recently undergone a software update. Before the update I was able to access the Last FM App from my Logitech Home page under the Apps section.
The app is no longer there so I need to know how I get it back as I cannot access it at the moment. When I click on the App Gallery it says it is still installed. I have tried uninstalling, re-installing and configering but it is still not there.
Any Ideas?
Many Thanks
Andy