Motion 4 when opening shows file missed reconnect

Hi everyone, I'm recently new to Motion 4. I'm starting a new project in Final Cut Studio 7 and I was sending a clip to motion 4 and when Motion 4 pulls up shows this message: "The following items used to create this project are missing" and of course it gives me the option: "Do you want to search for missing media?"

Then I try to reconnect according to the showed path, I select the file but the open button is grayed out and the canvas in motion 4 shows nothing but a checkboard. Then Iquit to motion 4 going back to FCP the timeline, obviously shows the media offline.

am i doing somenthing wrong...? I appreciate any clue about this issue!

Regards from Mexico!!!