Is it possible to downgrade from snow leopard to leopard? Yes, I know I should get updated programs, but this is one (Canvas) is for work and no longer supported in Mac version. Work bought new Windows version and then the computer got stolen from a locked office due to former custodian keeping their key. I bought Canvas via download w/o cd (first and last time for that), so now I'd have to shell out $400 for another copy and higher education is not got much funding now. Now I have macbook pro8,2 with 2.2 GHz Intel Core i7 and while the Canvas software ran with Leopard, it will not run with Snow Leopard.