Bukkit

Hey Tux, I'm having quite a few errors with MultiInv. I've done my best to document what's happening below.

What steps will reproduce the problem?
1. Change worlds or gamemodes.
2. Receive errors.
3. Cry.

What is the expected output? What do you see instead?
Expected: No errors, plugin works as intended.
Actual: Errors everywhere, MultiInv only occasionally changes inventories between worlds and groups.

Have you tried the latest version of MultiInv from http://build.yu8.me:8080/job/MultiInv3/ (If not please try it to see if it solves your issues)?
Yes, using latest dev build.

What version of the product are you using (if you say "latest" you will NOT be helped)?
MultiInv build #70, from the aforementioned dev build server.

Do you have an error log of what happened?
I have errors for days!
http://pastebin.com/qKAmee7P
http://pastebin.com/wDzs90Tj
http://pastebin.com/56c5WH23

What are your world folder names (with proper capitalization)?
Creative - DonorPlots - DonorsWorld - flat - Gr8-Moon - MiningWorld - NewPeaceful - NewSurvival - normal_amplified - normal_flat - Survival - Survival_nether - TheTrainStation

What are the contents of your config.yml and groups.yml?
Config (with MySQL info censored): http://pastebin.com/JfpYGzgL
Groups: http://pastebin.com/jR5MH1qG

What is the entire list of plugins on your server (doing /plugins on the console and pasting the output is a quick method to do this)?
Complete plugin list: http://pastebin.com/XjDXfmcv

Please provide any additional information below.
Nothing else to report at this time. Let me know if I can help you out with this in any way. Hope this info is helpful for you!

Confirmed in http://dev.bukkit.org/bukkit-plugins/multiinv/tickets/262-very-rare-npe/