Ok just to confirm answers in other topics.
Win7 is fully up to date and rebooted.
the clock has been changed recently due to daylight saving. I'm not sure if I have used Hauptwerk since then.
currently downloading the latest Hauptwerk 4.1 will up date in 2-3 hours time once it has downloaded.
PS There is a problem with the forum search. I searched "Sentinel LDK" and got no results.