Error: SSL_CTX_set_tlsext_servername_callback failed SSL

[ronin]

ssl_certificate /usr/local/nginx/conf/server.crt;
ssl_certificate_key /usr/local/nginx/conf/server.key;
or:
ssl_certificate /usr/local/nginx/conf/server.pem;
ssl_certificate_key /usr/local/nginx/conf/server.key;

Is the same error
: SSL_CTX_set_tlsext_servername_callback() failed (SSL:)

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,4701,5232#msg-5232