uploaded new version, everything now gone!

I just downloaded the new version of SmartFTP because my old one wouldn't load up unless I did.
Now when I launch it, all my folders and files are gone. It says it is empty.
However, Im still automatically logged in as myself, and the website I have is still all there and working, so they must be SOMEWHERE. This has never happened before, and Im pretty thick when it comes to this stuff (I just know the bare minimum to get by, which has served me well the past 5 years)