Thank you for your question.
It seems there might be a mistake in the code where the table is constructed.
Telerik.Windows.Documents.Model.TableRow row14 =
Telerik.Windows.Documents.Model.TableCell cellK1 =
"Avg Traded Value(3M)"
Telerik.Windows.Documents.Model.TableCell cellK3 =
I assume that what was intended was to add the cells to row14, but they are instead added to row13. This way row14 is added without cells, which is not allowed.
I hope this helps. If you encounter any further issues after you test with your desired number of columns, please, let us know.
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