Thank you for putting up the Dev build. This has allowed me to solve my problem. And... it's stupid. Files MUST be extracted to a folder named Shipbuilder. All one word. Any variation causes it to not be able to find the Data folder and then it can't load the CSV files. Like I said, it's one of those really dumb things that seems horribly obvious after it's found. I tested it repeatedly after finding it. However the files are set to locate folders, I suggest replacing a lot of it with wildcard sets like ../Shipbuilder_Data or however Unity tracks "in the folder I am running out of" rather than specifying the folder name that contains the program.