Look for the update name and Google the update name together with support.apple.com/DL to get the one referring to your camera, and make sure the system requirements list 10.9 or later. If they only say 10.6.8 or earlier, they will not necessarily work, since Apple got rid of Rosetta.
If you are stuck on 10.6.8 or earlier based RAW, it may pay to do one of the following:
1. Install Parallels with 10.6.8 Server. https://discussions.apple.com/docs/DOC-6841
2. Install Windows with the supported RAW using a virtualization software. https://discussions.apple.com/docs/DOC-2741
3. Install your prior operating system onto a USB Flash drive, and boot off that. Given 10.9's security issues prior to 10.9.2,
and your Mac's minimum operating system was 10.8.2, you may need to contact Apple Support to get the Mac App Store give you your system specific 10.8.2 download, so you can apply 10.8.5 combo and its security update if it was working on your Mac with 10.8:
http://support.apple.com/kb/DL1737- security update for 10.8.5.
4. Switch to a compatible camera with 10.9 or later.
Updating to 10.9, you should be prepared for the following: