Patching the game?

I noticed the server has a patcher in the folder but does it actually work or am I not doing it right? After not playing for some time the game starts closing on its own when I enter areas with other people so I was wondering if that has something to do with it not being up to date.

Or do we just have to re download the game every time there's an update?

 

You need to redownload the game files every time

 

Oh okay just making sure there isn't something I missed, thanks!