Problem with Logic Pro X and Bouncing projects

[liffordmark]

I am having problem bouncing projects from Logic.
When I bounce a project with 3 tracks and open it then on my desktop only 1 of the 3 tracks have been bounced.
No tracks muted.
I highlight the 3 tracks and go through the usual method but there is some problem.
My young son was messing with logic and a keyboard one day and I'm wondering did he touch a setting but I've looked at everything and can't find a problem

[ambient]

Are you sure you're bouncing the project ?

I usually click bounce project or section, it bounces all except the muted tracks.

[xgsjx]

I had this when I first got Logic. You don't need to highlight all the tracks.
I click the "Bnce" button on the master track bus (it's below the fader), make sure the start & end are where I want them to be & select the format & quality. It's that simple.