I also installed my wallet a long time ago. So I downloaded again and compared the old one with the my new downloaded wallet. It seems like there are some differences.

My "old" wallet has the version 1.1.0.0 and was modified 2016-11-07

The newest wallet that I downloaded from the link that you'll find on the first page of this thread has the version 1.0.0.0 and was modified 2017-10-16.

So now I'm a bit confused. Which one should I use?