Logic Pro 8 automation not working

#1
I'm recording a song and automation stopped working for all my instrument tracks. When I hit the yellow automation button in the arrange window I only see the yellow automation lines for the vocal tracks, which is tracks 22 and down.

Even when I turn one of the instrument faders to read, I cannot see the yellow automation lines. Does anyone know what could have happened? Is there a button that disables automation from a certain track down, or something? I'm confused. thanks!
 
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