TS Deployment Utility - Can't change Installer Source Location

[nikNGC]

The TestStand Deployment Utility won't let me change the driver installer source. Any help is appreciated.

In TestStand Deployment Utility --> Installer Options Tab --> Drivers Components Window there is a text box box for the installer source location. This is where the utility looks for the source files for the selected drivers. When selecting some drivers, the source can't be changed and the box is greyed out.

Great. Makes sense.

For others the box contains a path I selected previously.

The box isn't greyed out. I can edit the path, but the change is discarded when I deselect the box. I can select a different folder using the file browser button, but the change is discarded immediately.