ThomThom extensions

Newbie here. Can someone please help me with installing ThomThom extensions? I tried to install 3 of them and they didn’t install. I got this message:

I tried to install another extension by another developer and it worked fine.

You need to install the TT library first - search the extension warehouse for the latest.

As with most of thomthom’s Extensions, you also need TT_Lib² installing - the title of your error message tells you that it’s not installed.
Download the TT_Lib² RBZ and install it, then restart SketchUp to re-sync everything…

Thanks! I thought this was a weblink since it came up in a google search. They work now.