User Activity

I have a CanoScan 9000F scanner that is in perfect working order. Today, I tried to use its software on a relatively new MacBook Air and discovered that this scanner uses 32-bit technology (whatever that means) and will not work with the MacBook Air ...
I have a Canon Rebel T1i and I know it is past the Canon service period. I just need to understand a message I am getting on the screen where I should see photos. When I tap the key meant to let me see either the oldest or newest photo, I get this me...