Feral Heart

So my feralheart isn't working....Luckly i have two computers however on my laptop it does not work. I have deleted the game millions of times now at it has improved a bit but it still doesnt let me go into other worlds. I have also tried changing the rendering system but nothing is working so far...please please help. i love this game alot and it would be helpful to be able to play it on my laptop again. Everytime i get on it allows me to log in and make a char but the real problem begins when i enter a world. i'll enter the lonely cave and everything is fine but if i enter another world with other users it crashes.