Error-19034: Teststand Deployment Utility Unable to Execute Files

The program was originally developed using TestStand 2021 and LabVIEW 2021.
At the customer’s request, the environment was later migrated to TestStand 2025 Q3 and LabVIEW 2025 Q3.

However, when using the TestStand Deployment Utility to build the deployment package under TestStand 2025Q3 + LabVIEW 2025Q3, the following error occurs:

Error -19034: TestStand Deployment Utility Unable to Execute Files

What is the root cause of this issue, and how can it be resolved?

This issue is a known bug.
The root cause occurs when the “Modify project library file after removing unused members” option is selected in the VI Options.

When this option is enabled, LabVIEW internally updates the parent–child class relationships stored in the .lvlib file.

During this update process, LabVIEW may encounter stale class objects—objects that were replaced by newer versions but had not yet been fully cleared from memory.
Accessing these stale objects can lead to a crash during the build process, which ultimately causes the TestStand Deployment Utility to fail with:

Error -19034: TestStand Deployment Utility Unable to Execute Files

It will be fixed in later LabVIEW release.