For the last week or so, when I run the following query "select * from yahoo.finance.quotes where symbol = 'CLN14.NYM'" using the YQL console, or my custom app, the results returned indicate " No such ticker symbol. <a href=/l>Try Symbol Lookup</a> (Look up: <a href=/l?s=CLN14.NYM>CLN14.NYM</a>) "...
What's weird is that this just started happening. It's been working fine for months. The ticker symbol IS valid. If you lookup the quote using the web UI, "http://finance.yahoo.com/q?s=CLN14.NYM", it works fine.
Normal stock quotes seem to be working, but commodity quotes seem to be failing (I'm looking up 2 - CLN14.NYM and BZN14.NYM - both same results).