What operating system do you have?
If it's Windows 8, I can't offer any additional advice. I don't (and won't) have that operating system.
I have eleven computers here with Win7, WinXP, and Win98.
With any of those, I may be able to help you.
The fact that it says the program folder is empty, sounds like it really didn't install in that folder, if at all.
If you right click on the shortcut you use to try starting FreeScan, and select PROPERTIES, it should tell you which folder it's expecting to see the application in.
If the FreeScan application doesn't reside in that folder, it will not run.
Rich