At first I thought it wasn't saving my settings, but then with a little testing I found the config.xml file in /Data/settings was being saved, but my settings would not repopulate on opening the app again.
Looking at the launcher.ini, there are two major problems I can see:
a) The FileWriteN tags are actually spelled FileWiteN
b) Both FileWriteN tags are named FileWrite1
Not sure if the second one is actually an issue, as I haven't really looked into file handling much, but I am pretty certain the first would be causing my issues.