If you own a Silhouette Cameo cutting machine and the Basic Edition Software , you won't be able to use svg cutfiles on your machine.
In this case you will only be able to use DXF cut files,whuch you'll have to make your image a compound path before sending them to your cutting machine.
To be able to use svg cut files with your cutting machine you'll have to purchase the Silhouette Designers Edition software. Get it here
With the Designers Edition you'll be able to ungroup and cut all your svg cut files.