Blank chart when switching to a difrnt instrument

[sandman]

I have several charts for different instruments open. A pair of these were two tick charts, one with 150Ticks, the other one with 500Ticks. When trying to switch from TF to CL, I drew a blank on both charts. See attached image. When I close NT and restart it then everything is ok again up to the point when I switch these tick charts to another instrument. (I observed the same thing happening when I use a range chart). Both Log and Trace files state the following:

2015-08-19 16:30:49:989 ERROR: CQG.Adapter.SubscribeMarketDataResolve: F.US.CLE.V13 could not be resolved.
2015-08-19 16:30:49:989 ERROR: CQG.Adapter.SubscribeMarketDepthResolve: F.US.CLE.V13 could not be resolved.

What is this? And what do I have to do to resolve it so that it does not recur?

sandman

[sandman]

Never mind, I figured it out. As you can see from the image I tried to load a CL contract from the year 2013! No wonder it drew a blank.