In July we have printed extra versions of the game and already added a few corrections, that's why the game version has been updated to 1.46.
Currently we are about to finish a next patch (to be released soon and which will include these corrections) which will be version 1.47.
We admit that it's a bit confusing. Our apologies for this.
There's no need to download patch 1.45 if you have bought version 1.46.