error installing RDoc documentation: incompatible encoding regexp match

Question

Over the last week, on a few gem install or gem update operations, I\'ve received an error similar to these:

ERROR:  While generating documentation for sinatra-1.3.1          


        

Answer 1

I had a similar problem on Ubuntu and updating rubygems itself solved the problem for me. You can do that by entering the following at the command line:

gem update --system

Also, you can always skip the doc generation by using:

--no-rdoc --no-ri

when installing the gem.