Hello John,
In the client GUI (where from you start the network processing) you need to define Root path (path to same shared folder, that you define on the processing nodes), then re-open the project using the same root path (if you are using virtual drive, then use T:/project.psx, not //STORAGE/project.psx).
P.S. Usually we recommend to use UNC paths for root (both on nodes and client machine).