issue creating CSR in Command line

[scooterscs]

[root@mail certs]# /opt/zimbra/bin/zmcertmgr createcsr comm -new -keysize 2048 "/C=US/ST=Illinois/L=Chicago/O=Chicago/CN=mail.test.com"
** Generating a server csr for download comm -new -keysize 2048 /C=US/ST=Illinois/L=Chicago/O=Chicago/CN=mail.test.com
** Creating /opt/zimbra/conf/zmssl.cnf...done
** Backup /opt/zimbra/ssl/zimbra to /opt/zimbra/ssl/zimbra.20100809153241
** Creating server cert request /opt/zimbra/ssl/zimbra/commercial/commercial.csr...done.
** Saving server config key zimbraSSLPrivateKey...failed.

Any assistance would be appreciated, I have searched for hours now and found nothing that has helped. I am starting over with trying to install a GoDaddy SSL Cert.