Proper Server Shutdown with the ADMIN_ENCRYPT Configuration Keyword

It was found that the c-tree Server could fail during shutdown when the server configuration keyword ADMIN_ENCRYPT was specified and a component of the FAIRCOM.FCS file still required flushing during shutdown. The server then fails to start the next time as automatic recovery fails to occur.

Internal initialization in the checkpoint logic was modified to determine if the encryption routine was properly initialized. This now allows a proper checkpoint at server shutdown to take place with the encrypted contents of the c-tree Server user and group information file.