Problems installing project zomboid Thread

Hi, I downloaded project zomboid about a week ago and it doesn't work properly. I asked someone I know whether they could help me find out what the problem was and the only thing they could tell me was that something was wrong with the code and that there were issues with Java. I was wondering whether anybody else has encountered this problem or whether there is a patch for that sort of thing. As I don't quite know what exactly the problem is or what it is called, I couldn't really find out whether there already is a thread for it, sorry.

Thanks in advance