Thanks for the info.
When you have limited memory, running "fop2_server --register" or any other command line option while you still have the daemonized fop2 running in the background will take a lot of memory for the 2nd instance. So another options would be to stop fop2, then try to register via the command line, and finally start it again. In any case, you need 512mb on your virtual server.
Best regards,
