instiki syntax error

gistfile1.txt

/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/instiki:6:in `load': /usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:27: formal argument cannot be a constant (SyntaxError)
          'Default: 2500') { |OPTIONS[:port]| }
                                     ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:27: syntax error, unexpected '[', expecting '|'
          'Default: 2500') { |OPTIONS[:port]| }
                                      ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:30: formal argument cannot be a constant
          'Default: 0.0.0.0') { |OPTIONS[:ip]| }
                                        ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:30: syntax error, unexpected '[', expecting '|'
          'Default: 0.0.0.0') { |OPTIONS[:ip]| }
                                         ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:33: formal argument cannot be a constant
          'Default: production') { |OPTIONS[:environment]| }
                                           ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:33: syntax error, unexpected '[', expecting '|'
          'Default: production') { |OPTIONS[:environment]| }
                                            ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:43: formal argument cannot be a constant
          'Default: ./storage/[port]') { |OPTIONS[:storage]| }
                                                 ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:43: syntax error, unexpected '[', expecting '|'
          'Default: ./storage/[port]') { |OPTIONS[:storage]| }
                                                  ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:46: formal argument cannot be a constant
          ) { |OPTIONS[:notex]| }
                      ^
/usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/script/server:46: syntax error, unexpected '[', expecting '|'
          ) { |OPTIONS[:notex]| }
                       ^
	from /usr/lib/ruby/gems/1.9.1/gems/instiki-0.10.2/instiki:6:in `<top (required)>'
	from /usr/bin/instiki:19:in `load'
	from /usr/bin/instiki:19:in `<main>'