Ensure that all users using PCM600 have a user account (either a domain account or a standard user with the same name and password) on both client and server machines.
The PCMDATADIRABB system environment variable is automatically set to point to the shared folder of the server (PCMDataBasesABB, by default). If the server share name is not PCMDataBasesABB, the PCMDATADIRABB system environment variable must be set to point to the correct path. A UNC path must be used (for example, \\server\share).