Hi!all when i run ruby client program(which simply adds& subtracts two numbers by making XML-RPC call to ruby server program stored in cgi-bin directory of apache server), it's giving following error /usr/local/lib/ruby/site_ruby/1.8/xmlrpc/client.rb:502:in `do_rpc': HTTP-Error: 500 Internal Server Error (RuntimeError) from /usr/local/lib/ruby/site_ruby/1.8/xmlrpc/client.rb:382:in `call2' from /usr/local/lib/ruby/site_ruby/1.8/xmlrpc/client.rb:372:in `call' from ruby_c.rb:9 where is the problem? -- Posted via http://www.ruby-forum.com/.