Errors in executing first RoR app - reg.

There is nothing wrong in controller or view..... but something
problem in installation..... what version of Instant Rails you are
using..... also try to use ruby console window from Instant rails to
create apps...that adds all paths correctly......

Also start server using Instant Rails ... click on "I" ... "rails
application" -> "manage rails applications"..then choose your
applicaton and start server.......
good luck in exploring RoR