Hi,
The location of FileInfo panels has been moved from the previous shared location. Now the panels are bundled within the application and are loaded from there itself.
Go to /Applications/Adobe Photoshop CC (Or wherever it is installed on the machine).
Right click on the Application and click on "Show Package Contents".
Inside it go to the following path
.../Contents/Application Data/Custom File Info Panels/4.0
This is where the FileInfo panels are loaded from in case of CC apps.
Similarly for Windows, the panels are located within the application folder inside Program Files:
...\Program Files\Adobe\Adobe Photoshop CC\Custom File Info Panels\4.0
Regards,
Ankita