Just for future reference if adjusting the launcher setting file follow this to avoid folder bloat as this is a different game install and blows the hdd space used if not followed.
In regards to @Anacrhonism issue and to save a new game install, if it just said updating complete and no play button most common resolution is a quick fix.
Press Windows key + R and type
services.msc
press enter and ensure the bitraider mini support service stub loader is started , symptom of it not started is 100% complete and if try to re-install it will sit at 0% and not download.