Hi. I am new to the forum so please bear with me. I had Lightroom 4 and and installed all the updates. It was able to read raw files from Sony A7 and Nikon D750 until yesterday so I guess it's pretty much up to-date. It had been having some problems, like not showing preview pictures at the bottom. I uninstalled and reinstalled it. I forgot what was the latest version I had in the computer before I uninstalled it. Now it can't read the raw files from the newer cameras anymore. What to I need to do? Thank you very much.
Both these cameras were supported in Lightroom 5, the Sony in version 5.3 and the Nikon 5.7. If you were working with the raw files previously then you probably upgraded to version 5.
The download of the latest version is available at the above link.