Earlier this week, IQ Feed had as an issue with IEOption Chain Lookup as reported at http://forums.iqfeed.net/index.cfm?page=topic&topicID=5882.
This also resulted in the FDS command not working correctly. This has also since been fixed, but the reports for those days were not generated and cannot be re-created after the fact. So any FDS command with those days as the date will return an "E,50007,No file available." error. We are sorry for any inconvenience.
DTN IQFeed Implementation Support Specialist