It looks like Alex found an answer. I’m posting the answer to what I think the question is for other people who find their way to this thread. Anyways, your gradients and text styles need to be here:
Systems Drive, Library, Application Support, Final Cut Studio, Motion, Library
There you will find a Gradients and Text Styles folder.
If they are not. Click on your desktop and hit the command and F keys. Do a search for one of the gradients or text styles, such as “aqua fade”. Once found, move them to the above mentioned location. If they can’t be found, re-install Motion. Hope this helps.