as I said its intermittent.
so it can happen whilst setting up cars, driver profiles, saving, during pace car setup, changing throttle profiles etc etc..... basically whenever I am pressing a button in RCS64, regardless to what I am doing at the time.
I don't recall it ever locking after a race. Its always when changing 'settings' eg when RCS64 is saving or changing its settings.
This is why I believe the data being saves is getting corrupt somehow, because resetting all settings seems to fix it.
Its more tolerable now as I have exported my car settings so can easily re-import then when it happens.... for my drivers I am just leaving them as default (named driver 1-6 and with the default 'linear' throttle profile.).
Doug