1.3 server help, log errors PLEASE HELP ME D:

hello, i have the bukkit 1.3.1 recommended build and i run minecraft 1.3.2, when i set up the server, (it worked for 1.2.5 build) the server works fine, but then as i try to join, all these errors come up, at the bottom. i use hamachi




27 achievements
18:11:27 [INFO] Starting minecraft server version 1.3.1
18:11:27 [INFO] Loading properties
18:11:27 [INFO] Default game type: SURVIVAL
18:11:27 [INFO] Generating keypair
18:11:27 [INFO] Starting Minecraft server on 5.253.192.179:25565
18:11:27 [INFO] This server is running CraftBukkit version git-Bukkit-1.3.1-R2.0-b2340jnks (MC: 1.3.1) (Implementing API version 1.3.1-R2.0)
18:11:27 [INFO] Preparing level "COFFEECRAFT"
18:11:28 [INFO] Preparing start region for level 0 (Seed: -1487589751532278651)
18:11:28 [INFO] Preparing start region for level 1 (Seed: -1487589751532278651)
18:11:29 [INFO] Preparing spawn area: 16%
18:11:29 [INFO] Preparing start region for level 2 (Seed: -1487589751532278651)
18:11:29 [INFO] Server permissions file permissions.yml is empty, ignoring it
18:11:30 [INFO] Done (2.064s)! For help, type "help" or "?"
18:11:32 [INFO] /5.253.192.179:51524 lost connection
18:11:51 [SEVERE] Exception in thread "Connection #15 read thread"
18:11:51 [SEVERE] java.lang.NoSuchMethodError: org.bouncycastle.crypto.BufferedBlockCipher.a(ZLorg/bouncycastle/crypto/CipherParameters;)V
18:11:51 [SEVERE] at net.minecraft.server.MinecraftEncryption.a(SourceFile:148)
18:11:51 [SEVERE] at net.minecraft.server.MinecraftEncryption.a(SourceFile:157)
18:11:51 [SEVERE] at net.minecraft.server.NetworkManager.j(NetworkManager.java:300)
18:11:51 [SEVERE] at net.minecraft.server.NetworkManager.i(NetworkManager.java:201)
18:11:51 [SEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.java:326)
18:11:51 [SEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFile:93)
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any thoughts on how to fix this ? i run hamachi