TS UI Doesn't Respond when Loading VI Call using Project Path

Using the shipping example for a TestStand User Interface with Native controls, I'm calling my own .seq file. The seq only has one vi. Everything works well when I specify the VI Path in TestStand directly. However, if I specify the VI location using a Project Path (lvproj), the UI will never load the vi and goes unresponsive. Why might this be? Here's a screenshot showing the issue.