I have a semaphore I'd like create a reference for and bundle it into a cluster to pass to a subvi, is this possible? I have tried this and for some reason the reference cluster tied to the subVI has a broken line saying you have connected 2 clusters that mis-match. The typedef cluster has the proper semaphore in it, so I don't know why this won't work. Maybe you can't do this, not sure. Any ideas?
Yes, you can do this. If you have a broken wire, that means something just doesn't match up quite right. Open up the context help. Pay attention to how your cluster is defined as a datatype, and how the control in the subVI is defined as a datatype.
