Ok, so let me be clear. Yes, i have played over 300 hours without having any issues related to player profiles.
This time, me and my friend wanted to start a new world because we wanted to play the new Alpha 20. We installed some mods, started the game and went straight to create a new world. I DID have same player profile since i bought this game, so i never tried to make a new one. But one thing happened. When i started a new world, everything went good, i had my console open, loading finished, everything was ready, but when it came to joining into the world, bunch of errors came up in console" "EXC NullReferenceException: Object reference not set to an instance of an object".
We had this problem once before but not the same situation, so i figured that it had something to do with player profiles. So, i went and tried to create a new player profile. All those errors i wrote about showed up. We instantly went on internet and searched for other people with same issues. Then, I deleted all the mods. We found that i could try and delete the files through game launcher or i could even do that manually. So i did it every way, and every time i did it, i also validated my files. But it still didnt work.
So i reinstalled the whole game, i deleted every single file i could find in my computer related to 7 days to die. But sadly, it still didnt work and same problem appeared every single time. BTW my friend had same mods installed, but he never got the same issues i did.
And my conclusion is: I can not join into the game because i dont have a player profile created. But the funny thing is, i never deleted the one i created when i first bought the game. So, i think game somehow deleted my original player profiles and i can not join into the game. So i have to somehow create a player profile.
I can provide you all the mods we tried to use. If you have any questions, or you cant understand something, feel free to ask me. Thanks for your help