Logic Pro X: some Apple loops are disabled

Hi to everyone,

I'm a new Logic user and I'm very happy with this software, but I have a problem with the loop:

some loop in the loop browser are disabled,

I can see them (but the name is darker),

I can ear them through the preview icon/botton but I cannot trasport them in the tracks.

I downloaded and installed all the additional content package.

Is this normal?

I need to buy additional packages to use them?

Thanks,

\<.