Bukkit

PLEASE FILL OUT ALL THE INFORMATION BELOW! IF YOU DON'T DON'T EXPECT IT TO GET FIXED!

What steps will reproduce the problem?
Not sure, seems fairly random.

What is the expected output? What do you see instead?
I don't expect to see console spam, but instead continue to get this message constantly: http://pastie.org/10637096

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)?
I can't, my server is running 1.7.10 and can't download builds for 1.8 and such - if you could point me to the latest 1.7.10 version maybe that could fix it.

What version of the product are you using (if you say "latest" you will NOT be helped)?
3.3.1

Do you have an error log of what happened?
Pasted above.

What are your world folder names (with proper capitalization)?
world, survival