Thanks Russ.
The last time I installed the Spyder 3 software on my Mac I had to install Rosetta. I wasn't going to go that far retro. They have however upgraded the software. I'll repeat a post elsewhere.
"A lightbulb moment! I downloaded the Spyder 3 software and it wasn't working.
I remembered what Tony from IT would say, "Have you restarted your computer?". I did it and hey, the software works."
Cheers,