Unable to share my video on FCPX

Hi there, looking for some help.

I have been editing a music video in final cut pro x.
The footage was on my memory card and i imported the footage to final cut from the media card and begin editing. If the memory card was removed then the footage files disappear. When reinserted the footage appears. I have now finished the video and I am trying to share but when I go to file and then share all the export options are greyed out and I cannot share.

Is this because I never used footage from the computer itself? How can I fix this?

Please help

Cheers

Jay

Use File->Import->Reimport from Camera or Archive...