?unable to open raw photo file after downloading camera raw 7.4 update?

Can anyone help please.

I recently had my lap top wiped and have had to re load CS6.  I have also downloaded the camera raw 7.4 update (I use a Nikon D7100 camera) The update downloads without any problems, I go through download, install and then finish, but I still am unable to open my raw photos.  I get the following message...   'if you are attempting to open a raw file from a digital camera, make sure you have the latest raw camera update installed'.  I have no idea why it is doing this, or how to combat it.  Any suggestions would be much appreciated.  Thanks in advance.

Gail