logic pro no sound when sharing

I have a very strange problem. Logic has worked well always but yesterday when I recorded a Audio Track it could not be heard among the other tracks when I tried to share via Mail. It could´t be heard while Sharing to itunes either. I decided to update to Logic 10.2 and NOW no tracks can be heard. Only the click.

This is really confusing me. Is anyone familiar with this problem? What has happened.

Best regard

Daniel