SimpleDiffusionDirichlet doesn't work in conjunction with complex geometry

I followed Tutorial - LBM 4: Complex Geometry in order to use complex geometry. However, when using the boundary condition SimpleDiffusionDirichlet i perceive the following error:

terminate called after throwing an instance of 'std::bad_cast'

I initialize the ColorToBoundaryMapper with a BoundaryInfo which itself receives a shared_ptr<SimpleDiffusionDirichlet<..>::ScalarConfiguration>. After calling BoundarySetup::setBoundaries(..), the configuration gets passed to the BoundaryHandlingFactory. A few internal function calls later it ends up in SimpleDiffusionDirichlet<..>::registerCell(..). The cast in this method fails.

I might be missing something here but the code in this function doesn't seem to be essential. All it does is initializing val_. However, that value has already been set by the constructor.