[picaman]

I have upgraded to El Capitan but I'm keeping a separate Yosemite boot disk to run some legacy software. I can smart update a backup disk for that Yosemite boot disk if the computer is booted from the Yosemite boot disk, but if I try to run a backup while booted into the El Capitan startup disk I get an error message. I'd like to be able to schedule a nightly backup while booted into El Capitan as this is where I do the vast majority of work. Any ideas? Thanks in advance.