21:16:48 [SEVERE] Exception in thread "Connection #1 read thread"
21:16:48 [SEVERE] java.lang.NoSuchMethodError: org.bouncycastle.crypto.BufferedBlockCipher.a(ZLorg/bouncycastle/crypto/CipherParameters;)V
21:16:48 [SEVERE]       at net.minecraft.util.CryptManager.a(CryptManager.java:222)
21:16:48 [SEVERE]       at net.minecraft.util.CryptManager.func_75888_a(CryptManager.java:233)
21:16:48 [SEVERE]       at net.minecraft.network.TcpConnection.func_74448_j(TcpConnection.java:480)
21:16:48 [SEVERE]       at net.minecraft.network.TcpConnection.func_74447_i(TcpConnection.java:311)
21:16:48 [SEVERE]       at net.minecraft.network.TcpConnection.func_74450_c(TcpConnection.java:528)
21:16:48 [SEVERE]       at net.minecraft.network.TcpReaderThread.run(SourceFile:94)
21:16:51 [SEVERE] Exception in thread "Connection #2 read thread"
21:16:51 [SEVERE] java.lang.NoSuchMethodError: org.bouncycastle.crypto.BufferedBlockCipher.a(ZLorg/bouncycastle/crypto/CipherParameters;)V
21:16:51 [SEVERE]       at net.minecraft.util.CryptManager.a(CryptManager.java:222)
21:16:51 [SEVERE]       at net.minecraft.util.CryptManager.func_75888_a(CryptManager.java:233)
21:16:51 [SEVERE]       at net.minecraft.network.TcpConnection.func_74448_j(TcpConnection.java:480)
21:16:51 [SEVERE]       at net.minecraft.network.TcpConnection.func_74447_i(TcpConnection.java:311)
21:16:51 [SEVERE]       at net.minecraft.network.TcpConnection.func_74450_c(TcpConnection.java:528)
21:16:51 [SEVERE]       at net.minecraft.network.TcpReaderThread.run(SourceFile:94)