You didn’t get the correct one…don’t click on the Rocket link…click on the link in the news at the top of the page where it says that new beta versions are available.
All you need to do is replace the file, yes. Make sure that you don’t have two different copies of the plugin…there are two places where it can be installed: /Library/Audio/Plug-ins/Components and /Library/Audio/Plug-ins/Components. Check both places.
The beta version of the plug-in DOES validate under Snow Leopard, no exceptions. If the plugin you have doesn’t validate, you got the wrong copy.
Thank you for the info - I downloaded the file you linked to - made sure that I had deleted the old version - but still it doesn’t validate - It says version 1.52.5 is that the correct one ?