Inter Chassis Acquisition Trigger

[Alix Cave]

I'm trying to synchronize the clocks and acquisition of two PXIe-1082 chassis using PXI-6120s and PXIe-6674Ts for my acquisition cards and synchronization cards respectively. While I've been able to synchronize the clocks I haven't been able to route my trigger successfully to have the chassis start sampling at the same time. I've tried routing an NI Sync software trigger from the master to the slave via the PFIO lines, setting the slave destination to the PXI_Star lines, and setting the PXI_Star as my DAQmx trigger source. However, I receive an error stating "No registered trigger lines could be found between the devices in the route". I have attached my program and would appreciate any help anyone can offer.  

Export Clock & Record.vi