I have a problem with making a world in alpha 8.8 anytime I try the console pops up and says "NullReferenceException". I've verified the integrity of the game files but still nothing changes.
Null exception error can mean a lot of different things. Really need to read the pinned topic in this forum (the one that says Read first before creating a post) and follow its instructions so we can get the information we need to help you troubleshoot.