I'm getting the above error when running pumactl -S /var/www/redmine/tmp/puma/state status - trying to run redmine with puma here.

Being not really familiar with ruby/rails, has anyone a hint what i might be missing here?

pumactl version: 2.1.1
puma version 2.1.1
ruby 1.9.3p392 (2013-02-22 revision 39386) [x86_64-linux]
Rails 3.2.13
Bundler version 1.3.5