Error on loading chart data

[nepenthean]

I have a monthly chart of ZN 6-15 going back 10 years. When I reload historical data I receive the following error: "Error on loading chart data for 'ZN 03-05 Globex' : E, invalid symbol."

I have gotten this with GC, SI, 6E and CL. I have tried resetting instruments and rebooting which do not work.

Please advise.

[NinjaTrader_DrewO]

Hello,

Thanks for your note.

I'd like to see your log and trace files. Please send me a note to platformsupport (at) ninjatrader (dot) com. Attach your most current log and trace files to the email, and put a link to this forum post in the body of the email. Please note "ATTN: Drew" in the body of the response.

You will find the log file on your PC in the (My) Documents > NinjaTrader 7 > Log folder.

The log file will be named "log.20150413.txt"

You will find the trace file on your PC in the (My) Documents > NinjaTrader 7 > Trace folder.

The trace file will be named "trace.20150413.txt"

I look forward to hearing from you.