/usr/lib/ruby/gems/1.8/gems/rbgooey-0.0.6/lib/textrender.rb:47:in `new': could not load font: Couldn't open data/fonts/freesansbold.ttf (Rubygame::SDLError)
        from /usr/lib/ruby/gems/1.8/gems/rbgooey-0.0.6/lib/textrender.rb:47:in `render'
        from /usr/lib/ruby/gems/1.8/gems/rbgooey-0.0.6/lib/text.rb:35:in `add'
        from ./lib/scrollerui.rb:43:in `process'
        from ./lib/scrollerui.rb:41:in `each'
        from ./lib/scrollerui.rb:41:in `process'
        from ./lib/mapfilesmenuui.rb:51:in `refresh'
        from ./lib/mapfilesmenu.rb:68:in `keymode'
        from ./lib/mapfilesmenu.rb:58:in `menu'
        from /usr/lib/ruby/gems/1.8/gems/rubygame-2.3.0/lib/rubygame/queue.rb:101:in `each'
        from /usr/lib/ruby/gems/1.8/gems/rubygame-2.3.0/lib/rubygame/queue.rb:101:in `each'
        from ./lib/mapfilesmenu.rb:38:in `menu'
        from ./lib/mapfilesmenu.rb:37:in `loop'
        from ./lib/mapfilesmenu.rb:37:in `menu'
        from mapeditor.rb:37