I am using the TChart control in a form. Before any data is added to the control, it has writing "TeeChart" and 2 horizontal lines on it. How can this appearance be edited?

I just got the software and made a C# sample project in .NET 4.5 using VS2013. It's basically just a form with a tchart control in it. Unfortunately it gives the following error: Unable to resolve type 'Steema.TeeChart.TChart, TeeChart, Version=4.1.2016.5124, Culture=neutral, PublicKeyToken=9c812627...