Try downloading the for which there is a download link in this thread: Exploring the use of a $Path Variable in Scripts
Insert a file FROM your destination into the container field in this file selecting the "store a reference option" when you do so. Then check out the file paths extracted from this container field.
That should provide you with a valid file path to the desired destination.
Also make sure that the network volume is mounted before you run the script.
Many thanks I'll try that.