When I download the latest plugin and run my bukkit. I then go in game and try to type /rankup and nothing happens for any of the PrisonRankup commands.

This is most probably due to the plugin not loading correctly, please check startup logs for any errors and pastebin/gist them.

http://pastebin.com/ecmDfXy8 Here is the log from when it started to enable it till it finished. Starting from bottom to top.

Please read the known caveats of PrisonRankup, please apply both fixes accordingly.

Caveats? Could you add me on skype or something and explain?

Look here http://dev.bukkit.org/bukkit-plugins/prisonrankup/files/33-prison-rankup-v3-0/ (Known caveats are there)

Ok thank you. Also off topic but could you update a plugin for me?