Problem with Server SSL

Good Evening Team,

   I am using CWP Latest, only installed last week, on centos 6

   when you goto http://ip:2030

  The login screen does not appear..

  So I turned of IPTABLES

  And run [root@egham certs]# sh /scripts/restart_cwpsrv

  And I get this  failure

Stopping cwpsrv: [FAILED]
Starting cwpsrv: cwpsrv: [emerg] SL_CTX_use_PrivateKey_file("/etc/pki/tls/private/hostname.key") failed (SSL: error:0B080074:x509 certificate routines:X509_check_private_key:key values mismatch)
[FAILED]

any ideas what I can do to replace the ssl it was generated by CWP

Thank in advance from Alan