I have read back through posts and see that many are having problems downloading historical data.

I had a gap in my data file during the last weeks' problems and so deleted my mtgoxUSD.scid.  Unfortunately, it will not pull all the historical data to create a new, complete scid file.  All I get now is the last 2 days of data. 

Could someone direct me to the instructions for fixing this by downloading all data or said time blocks of data?

Thanks!