Howdy,
Motion works fine with Leopard, but you must properly install Leopard or it will break your Studio install.
Leopard offers three installation types:
- Upgrade: Doesn’t mess up the Studio, leaves everything in place.
- Archive & Install: This will break Motion, because this installation type doesn’t copy over all the required frameworks.
- Erase & Install: This gives you a squeaky-clean system, but you’ll need to reinstall everything, including backing up and restoring user data.
Again, the main things is to not do an Archive & Install, as it is guaranteed to break your Studio install, and you’ll end up having to do a wipe.