There should be a folder called 'English' inside the FFFox 1.5.3 update with a large amount of txt files inside it. That English folder since be in Data folder right alongside the rest of the folders. It sends back 'NoFile' if it can't find said txt files in the folder, such as the 'Data/English/Menu01.txt', etc. I've reattempted it on a fresh install from the OP with the Kagura prepatched version, and it works fine with loading the files. Maybe there is an issue with the folder being 'read only' or something? Also, make sure there are no foreign characters in the load path of the game.