Motion App filters not functioning.

Start by deleting Motion preferences. Hold down Command and Option while starting Motion and click Delete Preferences. This often clears unexpected behavior.

This is weird. I know that you have already deleted the preferences in Motion but maybe it’s worth trying that again and the same for FCP.

Also: if you open the Keyboard Viewer and click the space bar on the onscreen keyboard, does it also not work?

Also my Mac is from 2015 & I don't have an onscreen keyboard. Space bar doesn't work in the Pro Apps only (including Photoshop). As I mentioned earlier it works fine for Mail, Text Edit, and obviously this page.

All mac users have the onscreen keyboard that I am talking about.

Go to System Settings->Keyboard, then under Input Sources click Edit... and activate "Show input menu in menu bar".

Now you always have that Keyboard Viewer available:

My guess is that if you click the space bar in that Keyboard Viewer, when FCP or Motion are active, then it also would not work, thus confirming it is a software issue rather than an issue with the physical keyboard.

Hi

Check that you have visibility turned on. In the layers panel and in the timeline you will find a set of icons, these control the visibility for masks, behaviors and filters.

xxxxH wrote:

That worked! BUT the space bar doesn't work in Motion and Final Cut. Space bar works in other Apps such as text Edit.

You mean that if the timeline is active, space does not do play/pause?

Nothing was lost. FCP just opens a library called Untitled by default.

Just locate the library or libraries you were working on and open it (them).

You can double click them in the Finder or open from inside FCP File->Open->Library…

I am glad that you found the solution and thank you for sharing it!