From: Saurabh Gupta Date: 2011-03-09T20:07:09+09:00 Subject: Re: rb-appscript installation on MAC OS 10.6.3 (Snow Leopard) When i Tried again i didnot find any rb-appscript gem under that. The files under the rb-appscript-0.6.0 folder are: CHANGES extconf.rb sample README gem_make.out src doc rb-appscript.gemspec test After check the list i tried to build the gem using gemspec: LALIT-JAINs-MacBook:rb-appscript-0.6.0 lalitjain$ sudo gem build rb-appscript.gemspec Password: [rb-appscript.gemspec] isn't a Gem::Specification (NilClass instead). ERROR: While executing gem ... (NoMethodError) undefined method `mark_version' for nil:NilClass -- Posted via http://www.ruby-forum.com/.