Problems when disabling server?

Okay, I made a server a few weeks ago, but threw like 30 plugins into it at once, ran into a bunch of problems, and gave up. This time, I'm doing it in batches of no more than five in between server stop and server start so I can hopefully do it right and set permissions up properly and 'debug'. Now, the last time I told the server to 'stop', it threw a bunch of severe errors.

1. What OS are you using (Brand and version - Ex. Windows XP SP3)?
Mac OS X Lion 10.7.2
2. What architecture is the OS you are running (x64 or x86)?
x64
3. What version and architecture is your java install? (Type: java -version in command prompt.)
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03-383-11A511)
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02-383, mixed mode)
4. Are you running any wrappers? McMyAdmin, mcadmin, Hamachi, etc?
No, just CraftBukkit
5. What build of CraftBukkit are you running?
This server is running Craftbukkit version git-Bukkit-0.0.0-1126-g35eac7a-b1317jnks (MC: 1.8.1)
6. What command are you using to run your CraftBukkit server?
/Users/kyle/Desktop/Bukkit\ Server/LaunchServer.command ; exit;


LaunchServer.command:
cd ~/Desktop/Bukkit\ Server
java -Xincgc -Xmx2560M -jar CraftBukkit.jar
7. What plugins are you running?
BorderGuard, DCReason, Help, HeroicDeath, iConomy, MobBounty, NoWeather, PermissionsBukkit, PlayerStatus, Questioner, Permissions, Tombstone, WorldEdit, LWC, Register, Towny
8. What error are you getting (post your server.log file)?
http://pastebin.com/XHsmhSzf
9. What have you tried already?
Nothing, considering last time I tried to fix something, I broke two more plugins. And because the errors are when I stop the server, I don't even know where to begin.

If you need to see the server folder, just ask and I can upload to mediafire or dropbox in a zip file.

Server log:
http://pastebin.com/XHsmhSzf

 

Get RB build 1318, it fixes the NPE when disabling plugins.

 

I am assuming by RB you mean CraftBukkit Recommended Build? I don't know where to get 1318. I've been looking for link to the actual CraftBukkit files, and I found an RSS feed of recommended builds, but the latest one on the feed is 1317.