File Not Found Error for LabVIEW Code Modules in TestStand

Issue Details

I'm trying to call a code in a LabVIEW VI using an Action Step in my TestStand sequence. I am running TestStand using the LabVIEW Run-Time Engine in my adapter configuration, and I get the following error for some of my code modules:

LabVIEW: File not found. The file might be in a different location or deleted. Use the command prompt or the file explorer to verify that the path is correct.

Solution

You can prevent this error from appearing by using one of the methods below:

• If you are specifying a project path for the VI, remove the project path. Instead, call the VI using a relative or absolute path without any project path chosen.
• Change the adapter settings to the LabVIEW Development System.
• Build a deployment of the TestStand workspace or sequence.

If possible, avoid saving your LabVIEW projects in the instr.lib, user.lib, or vi.lib folders. Additionally, if VIs being called by TestStand have any dependencies that reside in these folders, this issue may occur.

Additional Information

This error can occur when a code module VI is contained in a LabVIEW project that is saved in the instr.lib, user.lib, or vi.lib folder. This is due to how TestStand generates the VI file path when using the LabVIEW Run-Time Engine adapter to locate VIs within projects. TestStand replaces LabVIEW\ with TestStand\bin\ when generating the file path, causing this issue.

The Development System can access these VIs by their relative path, fixing this issue. Additionally, when building a deployment, the TestStand Deployment Utility moves the dependencies to a different location that does not experience this issue. For steps on building a TestStand deployment, see Deploying LabVIEW Code Modules with NI TestStand. 

This is a known issue, seen here: TestStand 2016 Known Issues. This behavior can also be found in known issues lists for previous versions of TestStand.