I think the vendor is Tiny, you can check on this page - http://www.renderosity.com/mod/bcs/fluffy-cat/94626

for the vendor contact information.

When I was downloading the Christmas freebies, I did wonder how it would work correctly because you need the Daz Cat and the item has to be converted with RTJava or RTEncoder.

I hope you get it working, I have not installed it yet since I am still installing all the Rendo Christmas freebies.  We really had the most wonderful freebies from Rendo.  I am in Poser heaven.  Maybe soon, I will be in render heaven.  If I can get these installed.

Good Luck