Adobe lists the newest version of camera raw for mac os 8.4/8.4.1 as compatible with that camera.
What version of mac os x are you using?
Have you tried Help>Updates from within photoshop cs6 to get the 8.4.1 camera raw plugin?
I think 8.4.1 is only for CC it fixed a problem in a ACR new preview before after feature. CS6 only gets new camera support in ACR 8.4. New 8.4 features are crippled for CS6 users.
Thanks very much: via Help>Updates within Photoshop CS6 I got the right camera raw plugin!