Need Help Accessing Linux Files in Windows 8.1

I have a 2.5" hdd from an older laptop that died recently. The OS on that laptop was Ubuntu.

Now I need to access the data on that drive. 

I bought a USB enclosure and tried using this program: 

Installed and registered the program but for some reason it will not run. I tried running it as admin but still nothing. It doesn't show up in task manager either (only for a split second).

Does anybody have any ideas or suggestions? I don't understand why the program won't run. 


Thanks in advance.