Question: Simulation error message

I'm new here so apologies if the solution to this is is obvious.

I am getting the following message in Maplesim 3 when I try and run a simulation. At least I think it is an error message, could just be a statement?

 

Starting simulation...
Preparing model...
(in MapleSim:-Modelica:-Flatten) duplicate definition of `Main.Turbo.C`
 

Any tips on what this might mean would be appreciated as it means nothing to me...

Please Wait...