when they fix the forum and searching the old one I could find it for you,
I shared the link not long before the old forum archived but now I just get my username and a whole lot of gibbberish.
on Android, may try again later on my desktop. http://www.daz3d.com/sections/support/files/carrara_sdk/C8_SDK_8.0.0.215.zip
try the above
took a bit of Google searching with my YouTube channel name and Carrara SDK but I found the post after adding archive after forum in the url
as to C7pr, there is one but prob harder to find at present!
as to how to use it?
no idea!