The $0046 error is a "file not found" error. There are two ways this can happen when starting up from the network.
1) The Icons folder and the System folder need privileges set to the Bulletin Board item found in the GS/OS Icon Info menu item. If these folders are set otherwise, GS/OS cannot "find" the files inside these two folders.
2) There is a file missing or misplaced on the server volume that the Apple IIGS requires for startup. Usually reinstalling GS/OS onto the server resolves the problem.