If you want to run a TS script that calls VIs on a Runtime engine only system you have to use the Deploy TestStand utility to do that. Since a Runtime Engine only system does not have vi.lib you must search all the .seq for VI calls and then traverse all the SubVis to find all the calls to VIs in vi.lib. The Deploy TestStand does that for you. It moves all the VIs and SubVIs to a SupportVI directory and mass compiles them. Once all VIs are within the same directory the runtime engine can find them.
Note: This is a very nasty poorly written tool. I had a deploy that would take about 6 hours to complete. I wrote my own that takes about 4 minutes to complete.
