http://pastebin.com/4Z0nKFGg

This means that your world-board.yml file contains wrong data.

I need to see the file.

well,, apart from this its empty
http://pastebin.com/WU0qi8nA

another (a couple of worlds)
http://pastebin.com/jQg7JSYU

One of your files contains something wrong. I cant see any errors in these two.

Either its none of these or its something I dont see.

Have you tried to edit the files manually?

I will see if I can improve the error text so we get an idea of whats wrong.

I checked the code, and you can get this error if you have a file for a deleted world.

Also I would like to see the real server log, because Multicraft has
Skipped 22 lines due to rate limit (30/s)

If you try build 283 or newer
http://jenkins.lindegaard.one:8180/job/MobHunting/

You will get the UUID of the missing world, if this is the root cause for this error.

It looks like you have a Leaderboard with no or an Invalid StatType.

I have added a test and a warning, if this happens in next release.

ah.. ok, i let someone doing some building work around where the leaderboard is recently... i wonder if they altered something? Thanks :)

Used the latest build
http://pastebin.com/Mbf6Uy44

ok, well... i deleted the 2 leaderboard world files and did a reload on the plugin.... turned out not to be a good idea (crashed java on the box) http://pastebin.com/v6GXRc5v
But, on the plus side, the error has gone :)
Nealry shit my pants though haha

You are not the only one having problems with reloading the plugin. /mh reload works on both my servers and I cant replicate this error :-(

I think it weas trying to write to the files i had deleted? Pretty silly do delete them whilst the server was running really

Agree changing config files can be dangerous when its not mean to...

Maybe if you had disabled the plugin with plugman and then deleted the file...

Well, I want my plugin to handle and write nice warnings in the log if this happens, I dont want "ugly" warnings like you got. So if we can find the error I will make a fix/nice warning.

I have just released V4.4.7 which should tell you were the leaderboard is.

You sir are awesome! Top man :)
Thanks for your help

Lets see if we can find the problem, its sometimes not that easy!

Just installed 4.4.7 and... sorry :/
http://pastebin.com/7bNNJ3Rt

Im going to delete all the boards and start again,

This error can ONLY happen if you have a leaderboard in one of the leaderboard configuration files where the location is null (does not exist)

You dont need to delete them all because of me, I would like to find the error to understand why this happens. I you have this error other will have it too at some point.

Maybe if you had disabled the plugin with plugman and then deleted the file...

Can I close this ticket now?

Sorry.. yes i believe it can be closed
Thanks for your help :)