[amibroker] IB Backfill Problem

Hi, I'm using amibroker 5.2 with IB data plugin ver.1.8.4.. I have set the database base time settings to 5 sec. It's very weird that the backfill for HKFE and SEHK symbols have no problem, but there is error reporting for most other symbols and the backfill failed. The erro message as follows

[amibroker] Re: IB Backfill Problem

"-ISLAND", True ); > Open = TimeFrameGetPrice( "O", inDaily, 1 ); > Close = Foreign( "-ISLAND", "close", 1 ); > Change = Close - Open; > PerCentChange = ( Change / Open ) ; > > > RestorePriceArra