Whenever I download quotes, I get this error:

Is there ANY way to determine which security(s) are not updating?
I have confirmed that AT&T is NOT the problem, but I have a large number of securities and no way to know what list my tickers are being compared to - so that I could dump out my tickers and compare to a list of Quicken tickers. That would be the easiest way.
Any way to access that underlying data and get a list of securities and a "last updated" field or something?