Create an environment variable named PTC_TWX_TESTSTAND_PLUGIN_PATH. For the value of this environment variable, specify the full path to the location of the <NI_TestStand_Connector>\TestStandPlugin\config.ini file.

For example, if the path for the config.ini file is: D:\codebase\ni-teststand-plugin\config.ini, then the environment variable value is D:\codebase\ni-teststand-plugin.