I have a strategy applied to a chart on another installation shown here . I cannot see why it is saying invalid symbol there when on my new installation, without the strategy applied, I do not get that error for either symbol. It seems that it might be getting only partial data for those symbols.
Perhaps a screen sharing session could help to resolve it.
I can be reached via Google Messenger here https://hangouts.google.com/group/eXDKfX7rWa044rEH2
Assistance is greatly appreciated.