#2 Errors during installation

[tcpvijay]

I'm trying to install the software on my local machine( RHEL 6.3 x86_64 OS) following the given instructions. I'm getting the following error executing rake db:migrate --trace

ERROR

rake aborted!
ERROR: 'rake/rdoctask' is obsolete and no longer supported. Use 'rdoc/task' (available in RDoc 2.4.2+) instead.
/usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/rdoctask.rb:1
/usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:45:in gem_original_require' /usr/lib/ruby/site_ruby/1.8/rubygems/core_ext/kernel_require.rb:45:inrequire'
/octets/Rakefile:8
/usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/rake_module.rb:25:in load' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/rake_module.rb:25:inload_rakefile'
/usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:589:in raw_load_rakefile' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:89:inload_rakefile'
/usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:160:in standard_exception_handling' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:88:inload_rakefile'
/usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:72:in run' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:160:instandard_exception_handling'
/usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/lib/rake/application.rb:70:in run' /usr/lib64/ruby/gems/1.8/gems/rake-10.0.4/bin/rake:33 /usr/bin/rake:23:inload'
/usr/bin/rake:23

I'm using rails 2.3.5 and ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
How to resolve this error? Please help. Thanks in advance.

[tcpvijay]

Resolved. Was able to install the software using rvm. Thanks