I’ve been struggling with this problem before,
The current setup is:
Mac 10.9 server with shared storage
Parallels 10 with win8 and Rhino 5.
Sometimes the users are not allow to overwrite files on the server.
I have given the users “full control” permissions on the fileshare, so they should be able to create, delete move, but from within Rhino they gey this error.
They can, as a workaround, save the file under a new name.
Is this normal or is this an issue because they are not using a windows server ?