Setup script always sets pwd and other directories to root
If the user extracts the directory with a umask of 0077, then the user the server needs to run under cannot access it because $PWD is 700 and is therefore owned by root.
Since the CMAE server does not drop privileges, the permissions should be set up to allow execution with the proper credentials.
When running the CMAE server as a non-root user, verify that the permissions for the directory in which the server was installed meets your needs. You may need to modify the owner, group, or modes of the installed components to match your security policy.