Trouble setting up n12 as Remote Device

I took a look around through the threads and didn’t see a post to add to …
I am using a MacBook Pro with 10.5.8… Cubase AI 4 4.5.2 … and the Yamaha n12
I have done all updates from Yamaha site and almost all works …

The issue I am having is that the remote functions of the n12 are not working and the light does not come on.
I have setup the Mackie Control setup and gives me play stop etc… however no track controls and such…
The n12 is in the list of Devices to add but when I add it, it comes up with and “!” and "Device failed to open"

Any feedback or resolve for this issue would be greatly appreciated!

I was able to successfully sync the n12 to my macbook pro with 10.5.8 with select combination of Yamaha driver and cubase ai 4 updates…