I've downloaded the file twice, still get the same zero byte files:
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Audio\RailVehicles\Diesel\NW2\Cab\NW_Horn.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Audio\RailVehicles\Diesel\NW2\NW2_E_Sound.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Buckeye\Buckeye_coupling.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Diesel\NW2\Default\Engine\R_WA-NW2.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Diesel\NW2\Default\Simulation\NW5_Simulation.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft-load_logs.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft-load_pulpwood.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft-load_rail stack.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft-load_timber.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft-load_wrapped.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft_bulkheads_rwa.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\50ft_stanchions_rwa.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\bflat-load_pipes1.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\bflat-load_pipes2.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Flatcar_50ft\Default\bflat-load_pipes3.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Freight\Gondola_52ft\Default\gondola52_gravel.xml
Assets\RailWorksAmerica\ModernUSFreight\RailVehicles\Particles\DieselExhaust.xml
Not sure if this is a problem, haven't tried using any of the rolling stock as of yet. Anyone else get this?