Aaron,
As long as you registered the dll, it shouldn't matter where the .rtdll is stored. When I ran it, I was targeted to RTX. It may show as a broken arrow if you are targeted to LabVIEW. So try targeting to RTX first, then try running the VI.
Doug M
Applications Engineer
National Instruments
For those unfamiliar with NBC's The Office, my icon is NOT a picture of me 🙂