Quote from gregiii:
Got this from IQfeed support just now:
ftp://www.dtniq.com/iqfeed/qtfix.zip
seems only stock.exe is updated.
Replaced mine stocks.exe with this new one only.
So far so good. Backfill ok now.
Quote from Aaron M:
I didn't ask.
I did give support a link to this thread so maybe they can chime in.

Quote from ydfah:
For those that can not access the iqfeed ftp site for any reason, you can get the backfill fix here:
http://www65.zippyshare.com/v/77716919/file.html