Nested Mail Merge cannot handle empty lists.
Workaround: Replace the empty list with null.
With the current implementation of the RadFlowDocumentEditor`s CharacterFormatting.FontWeight.LocalValue accepts only FontWeights.Bold and FontWeights.Normal and throws an exception when setting different weights (ex. Black, Thin, etc.).
Is there a way to prevent font embedding in the RadFlow methodology or is utilizing RadFixed the only way to have a reasonably sized PDF document?