If you can find a download for 6.6, just reinstall it. If that version of ACR was before they used the installation method, you just replace the plug-in file in the plug-in folder. What OS are you using?
OS system is Windows 8.1
Ok, i'm not sure where the plugin would go with a Mac, but with Windows, the Camera Raw Plugin is put in this folder:
C:\Program Files (x86)\Common Files\Adobe\Plug-Ins\CC\File Formats\Camera Raw.8bi
Actually, I just checked, and it looks like they have an installer for 6.6 at this link:
Cheers for this. The link and download works fine but the extractor doesn't complete. Keep getting an error log which then reverts me back to CR6.7
I have a feeling this is going to be a right royal pain so will just suffer with 6.7 until I finally have no choice but to go onto CC with hopefully a sensible CR version to match