Propagate row data until next date is encountered - response (9) by Harry Droogendyk

And there's no null event_dt values.  I tried current_date+1000000 and still got the 9103 error.  Could it be a data type issue, timestamp vs date or something weird ?  
I've since run this in SQL Assistant creating perm tables, travel_cum_os_reserves.event_dt is DATE, values from 1999/12/22 to 2013/08/26.