Development of Creative Commons licenses

[rob AT robmyers.org]

I am Not A Lawyer, I am Not CC.

Quoting M Featherston <opensourcepro AT gmail.com>:

> if I take a photo that was licensed under version 1.0 of the
> Attribution-NonCommercial-ShareAlike License, and then take a photo licensed
> under the version 2.5 license, would there be legal or other issues?

1.0 doesn't have an "upgrade clause" so as far as I know you wouldn't 
be able to
use the 1.0 work under the 2.5 license. So there's a compatibility problem.

> Also,
> using my example of version 1.0 and version 2.5 being combined, would the
> derivative I create be automatically licensed under a 2.5 license?

You couldn't create such a derivative, so it couldn't be 2.5.

2.0 does have an upgrade clause, so you could mix 2.0 and 2.5 work and release
the results 2.5 .

- Rob.