From: "Iñaki Baz Castillo" Date: 2009-04-04T21:46:50+09:00 Subject: Error installing gem "mysql" in Ruby 1.9.1 Hi, trying to install gem "mysql" in Ruby 1.9.1 I get an error: error: ‘struct RString’ has no member named ‘ptr’ This is due to RString changes from Ruby 1.8 (now in 1.9.1 RSTRING_PTR(arg) must be used instead of RSTRING(arg)->ptr). What can I do to get mysql working in Ruby 1.9.1? where can I get an updated MySQL driver? Thanks a lot. -- Iñaki Baz Castillo