We tried to setup network render at our office. One thing that’s buried in the documentation is the location of the shared files. While the working file is automatically uploaded, you need to be certain that any external textures, materials, etc. that your project needs to run are also located in this shared folder.
Like morons I was trying to network render files with a few gigabytes of motion picture textures. The network renderer will jam with large textures as it tries to feed the texture to the client computer’s memory.
To summarize: Find your shared folder, save the world.