Hi Eli,
You also need to add a tool which designates the current chart - so the code should look like:
nChartControl1.Controller.Tools.Add(new NPanelSelectorTool());
nChartControl1.Controller.Tools.Add(new NTrackballTool());
The reason for this is that since the chart supports rotation (trackball) on multiple charts the first tool selects the chart at the current mouse position and the second actually performs the rotation. Hope this helps - let us know if you have any questions or meet any problems.
Best Regards,
Nevron Support Team