so, it's a kind of bug. i.e, if we have only one scrip to trade we need to mention in the backfill settings -> Update RTD scrips/preserve column as 0. If we put this as 1, if we run the RTD Man again then the one scrip adds up one more time in the ini file causing problem.
In some cases / sometimes, one needs a little tweaking.
I myself get all such errors and has to repeat all such tweaking, if I missed doing it, initially.
so, it's a kind of bug. i.e, if we have only one scrip to trade we need to mention in the backfill settings -> Update RTD scrips/preserve column as 0. If we put this as 1, if we run the RTD Man again then the one scrip adds up one more time in the ini file causing problem.