PieChart - Error #1009

Hello!

 

First of all, sorry for my english...

 

I'm having this problem: Pie charts aren't shown and the dashboard stop working...

 

Steps to create:

All data is created manually (No BEx or Universe) and the idea is to show 2 different views controlled by a combo box. If you choose "VIEW 1" is shown the first group, with a pie chart and a column graphic. For "VIEW 2" only a pie chart appears.

 

When I try to visualize the problem appears: When choosing VIEW 1, the pie is not shown in the correct way; when changing to VIEW 2, the graphic doesn't appear, and after that I can't change anything... And when I am able to change, nothing happens.

 

Did anybody have this problem?

 

Thanks in advance for any help!!

 

Here is the error:

 

TypeError: Error #1009: Cannot access a property or method of a null object reference.
                 at xcelsius.charts::PieChart/calculateLabelPositionForOutsideEndWithLeaderLine()
                 at xcelsius.charts::PieChart/drawSingleDataLabel()
                 at xcelsius.charts::PieChart/drawDataLabel()
                 at xcelsius.charts::PieChart/updateDisplayList()
                 at mx.core::UIComponent/validateDisplayList()
                 at mx.managers::LayoutManager/validateDisplayList()
                 at mx.managers::LayoutManager/doPhasedInstantiation()
                 at mx.managers::LayoutManager/doPhasedInstantiationCallback()