# Mongrel ri is not installing **URL:** \ **Category:** Rails\ **Created:** [March 4, 2008, 8:10am UTC](https://www.ruby-forum.com/t/mongrel-ri-is-not-installing/130885 "2008-03-04T08:10:32Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![mokkai](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/c2a13f/32.png) [@mokkai](https://www.ruby-forum.com/u/mokkai)\ **Post date:** [March 4, 2008, 8:10am UTC](https://www.ruby-forum.com/t/mongrel-ri-is-not-installing/130885/1 "2008-03-04T08:10:32Z")
when i execute $~ sudo gem install mongrel Building native extensions. This could take a while… Successfully installed mongrel-1.1.4 1 gem installed Installing ri documentation for mongrel-1.1.4… ERROR: While generating documentation for mongrel-1.1.4 … MESSAGE: Unhandled special: Special: type=33, text=“A” … RDOC args: --ri --op /usr/lib/ruby/gems/1.8/doc/mongrel-1.1.4/ri –quiet lib ext (continuing with the rest of the installation) Installing RDoc documentation for mongrel-1.1.4… $~ what is the error for ri doc ?