Need suggestion about software to open PCB and SCH files

Hello experts,
I want to open printed circuit board (PCB) as well as Designer Schematic Capture Binary (SCH) files of Dual Motor Control Kit. How do I do it? I've tried both the EAGLE (Easily Applicable Graphical Layout Editor) software and P-CAD 2006, but I was unable to open the files. Below, I have added the screenshot of the error. What program I need to use? Thanks a lot.
