Sounds like I am having the same issue. Any resolutions? I am using a mapped network folder on the host and all nodes have full access to the share (Everyone=full, user=full, hell I set every account listed to full control permissions and still get this error. All nodes can create and edit and delete everything on the share?
[16:53:40][I]: Render1_Left: nDisplay config file successfully transferred to C:\Users\fsadmin\AppData\Local\Temp\ndisplay\031B7EEB4925AE411E03D59104AC53EB.ndisplay on host
[16:53:40][D]: Render1_Left: nDisplay uasset transfer failed: Error while trying to write to M:\SunTemple\Content\nDISPLAY\3_monitor_Ndisplay_01.uasset