Input settings reset at every build launch

Hey guys, I am having trouble with input settings. I did set them correctly in the input manager, but when I launch my build, the input settings shown are different from what I set during dev ! And even worste: even after manually changing back each input in the splash screen, the demo works fine but the next time I run it, it is back to bad values again... Any idea why this happens ? And any idea what to do to make sure that the input settings are by default the ones I set in the input manager before build ? I am using 4.5.5. thanks !