Ethereum Go Running Contract Error

2014/05/23 17:19:22 [STATE] Added block #1152 (f4f7b4e618210752aa84bc05243f5d9fa4958d3a74b98fd19a871846aab463e9)

panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x38 pc=0x41f99a5]

goroutine 6 [running]:
runtime.panic(0x4463140, 0x49dd039)
    /usr/local/go/src/pkg/runtime/panic.c:266 +0xb6
github.com/ethereum/eth-go/ethpub.(*PEthereum).createTx(0xc2109b00f0, 0xc210e7b820, 0x40, 0x44e32c0, 0x0, ...)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethpub/pub.go:154 +0x5c5
github.com/ethereum/eth-go/ethpub.(*PEthereum).Create(0xc2109b00f0, 0xc210e7b820, 0x40, 0x0, 0x0, ...)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethpub/pub.go:94 +0xe7
github.com/ethereum/go-ethereum/ethereal/ui.(*Gui).Create(0xc2109c45a0, 0x0, 0x0, 0x0, 0x0, ...)
    /Users/*******/go/src/github.com/ethereum/go-ethereum/ethereal/ui/gui.go:267 +0x18f
reflect.Value.call(0x44bdee0, 0xc2109c45a0, 0x138, 0x44e58c0, 0x4, ...)
    /usr/local/go/src/pkg/reflect/value.go:474 +0xe0b
reflect.Value.Call(0x44bdee0, 0xc2109c45a0, 0x138, 0x6c7bcf0, 0x5, ...)
    /usr/local/go/src/pkg/reflect/value.go:345 +0x9d
github.com/go-qml/qml.hookGoValueCallMethod(0x6868910, 0xc2100a01e0, 0x7fff00000000, 0x7fff5fbfaa40)
    /Users/*******/go/src/github.com/go-qml/qml/bridge.go:497 +0x40c
github.com/go-qml/qml._Cfunc_applicationExec(0x4a07768)
    github.com/go-qml/qml/_obj/_cgo_defun.c:69 +0x31
github.com/go-qml/qml.guiLoop()
    /Users/*******/go/src/github.com/go-qml/qml/bridge.go:43 +0x132
created by github.com/go-qml/qml.Init
    /Users/*******/go/src/github.com/go-qml/qml/qml.go:44 +0xa0

goroutine 1 [semacquire]:
sync.runtime_Semacquire(0xc210e5aafc)
    /private/var/folders/00/0sdwh000h01000cxqpysvccm0035qk/T/makerelease023741545/go/src/pkg/runtime/sema.goc:199 +0x30
sync.(*Mutex).Lock(0xc210e5aaf8)
    /usr/local/go/src/pkg/sync/mutex.go:66 +0xd6
github.com/go-qml/qml.(*Window).Wait(0xc210e59230)
    /Users/*******/go/src/github.com/go-qml/qml/qml.go:892 +0x9b
github.com/ethereum/go-ethereum/ethereal/ui.(*Gui).Start(0xc2109c45a0, 0x44e32c0, 0x0)
    /Users/*******/go/src/github.com/ethereum/go-ethereum/ethereal/ui/gui.go:98 +0x61c
main.main()
    /Users/*******/go/src/github.com/ethereum/go-ethereum/ethereal/ethereum.go:128 +0x7a2

goroutine 3 [syscall]:
os/signal.loop()
    /usr/local/go/src/pkg/os/signal/signal_unix.go:21 +0x1e
created by os/signal.init·1
    /usr/local/go/src/pkg/os/signal/signal_unix.go:27 +0x31

goroutine 4 [syscall]:
runtime.goexit()
    /usr/local/go/src/pkg/runtime/proc.c:1394

goroutine 7 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compactionError(0xc21007e480)
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go:115 +0x1c5
created by github.com/syndtr/goleveldb/leveldb.openDB
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db.go:114 +0x402

goroutine 8 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compaction(0xc21007e480)
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go:437 +0x75f
created by github.com/syndtr/goleveldb/leveldb.openDB
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db.go:117 +0x443

goroutine 9 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).writeJournal(0xc21007e480)
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db_write.go:36 +0x142
created by github.com/syndtr/goleveldb/leveldb.openDB
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db.go:118 +0x45a

goroutine 10 [select]:
github.com/ethereum/eth-go/ethchain.(*TxPool).queueHandler(0xc210039d20)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethchain/transaction_pool.go:172 +0x2c8
created by github.com/ethereum/eth-go/ethchain.(*TxPool).Start
    /Users/*******/go/src/github.com/ethereum/eth-go/ethchain/transaction_pool.go:243 +0x2e

goroutine 11 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compactionError(0xc21007e6c0)
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go:115 +0x1c5
created by github.com/syndtr/goleveldb/leveldb.openDB
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db.go:114 +0x402

goroutine 12 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).compaction(0xc21007e6c0)
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db_compaction.go:437 +0x75f
created by github.com/syndtr/goleveldb/leveldb.openDB
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db.go:117 +0x443

goroutine 13 [select]:
github.com/syndtr/goleveldb/leveldb.(*DB).writeJournal(0xc21007e6c0)
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db_write.go:36 +0x142
created by github.com/syndtr/goleveldb/leveldb.openDB
    /Users/*******/go/src/github.com/syndtr/goleveldb/leveldb/db.go:118 +0x45a

goroutine 14 [IO wait]:
net.runtime_pollWait(0x67a7df0, 0x72, 0x0)
    /private/var/folders/00/0sdwh000h01000cxqpysvccm0035qk/T/makerelease023741545/go/src/pkg/runtime/netpoll.goc:116 +0x6a
net.(*pollDesc).Wait(0xc2109b7d80, 0x72, 0x67a40e8, 0x23)
    /usr/local/go/src/pkg/net/fd_poll_runtime.go:81 +0x34
net.(*pollDesc).WaitRead(0xc2109b7d80, 0x23, 0x67a40e8)
    /usr/local/go/src/pkg/net/fd_poll_runtime.go:86 +0x30
net.(*netFD).accept(0xc2109b7d20, 0x45d00b8, 0x0, 0x67a40e8, 0x23)
    /usr/local/go/src/pkg/net/fd_unix.go:382 +0x2c2
net.(*TCPListener).AcceptTCP(0xc210000ca8, 0x0, 0x0, 0x0)
    /usr/local/go/src/pkg/net/tcpsock_posix.go:233 +0x47
net.(*TCPListener).Accept(0xc210000ca8, 0x0, 0x0, 0x0, 0x0)
    /usr/local/go/src/pkg/net/tcpsock_posix.go:243 +0x27
github.com/ethereum/eth-go.(*Ethereum).peerHandler(0xc21007a160, 0x67a6e50, 0xc210000ca8)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethereum.go:412 +0x2d
created by github.com/ethereum/eth-go.(*Ethereum).Start
    /Users/*******/go/src/github.com/ethereum/eth-go/ethereum.go:339 +0x2a5

goroutine 15 [chan receive]:
github.com/ethereum/eth-go.(*Ethereum).ReapDeadPeerHandler(0xc21007a160)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethereum.go:321 +0x67
created by github.com/ethereum/eth-go.(*Ethereum).Start
    /Users/*******/go/src/github.com/ethereum/eth-go/ethereum.go:347 +0x18e

goroutine 24 [chan receive]:
github.com/ethereum/eth-go.(*Ethereum).ReapDeadPeerHandler(0xc21007a160)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethereum.go:321 +0x67
created by github.com/ethereum/eth-go.(*Ethereum).Start
    /Users/*******/go/src/github.com/ethereum/eth-go/ethereum.go:347 +0x18e

goroutine 19 [select]:
github.com/ethereum/eth-go.(*Peer).HandleOutbound(0xc210079480)
    /Users/*******/go/src/github.com/ethereum/eth-go/peer.go:228 +0x246
created by github.com/ethereum/eth-go.(*Peer).Start
    /Users/*******/go/src/github.com/ethereum/eth-go/peer.go:506 +0x2a0

goroutine 20 [IO wait]:
net.runtime_pollWait(0x67a7d48, 0x72, 0x0)
    /private/var/folders/00/0sdwh000h01000cxqpysvccm0035qk/T/makerelease023741545/go/src/pkg/runtime/netpoll.goc:116 +0x6a
net.(*pollDesc).Wait(0xc210064220, 0x72, 0x67a40e8, 0x23)
    /usr/local/go/src/pkg/net/fd_poll_runtime.go:81 +0x34
net.(*pollDesc).WaitRead(0xc210064220, 0x23, 0x67a40e8)
    /usr/local/go/src/pkg/net/fd_poll_runtime.go:86 +0x30
net.(*netFD).Read(0xc2100641c0, 0xc21102d200, 0x5a0, 0x5a0, 0x0, ...)
    /usr/local/go/src/pkg/net/fd_unix.go:204 +0x2a0
net.(*conn).Read(0xc210e5a0c8, 0xc21102d200, 0x5a0, 0x5a0, 0x5a0, ...)
    /usr/local/go/src/pkg/net/net.go:122 +0xc5
github.com/ethereum/eth-go/ethwire.ReadMessages(0x67a7e98, 0xc210e5a0c8, 0x0, 0x0, 0x0, ...)
    /Users/*******/go/src/github.com/ethereum/eth-go/ethwire/messaging.go:131 +0x1a6
github.com/ethereum/eth-go.(*Peer).HandleInbound(0xc210079480)
    /Users/*******/go/src/github.com/ethereum/eth-go/peer.go:272 +0x85
created by github.com/ethereum/eth-go.(*Peer).Start
    /Users/*******/go/src/github.com/ethereum/eth-go/peer.go:508 +0x2ba

goroutine 23 [select]:
github.com/ethereum/go-ethereum/ethereal/ui.(*Gui).update(0xc2109c45a0)
    /Users/*******/go/src/github.com/ethereum/go-ethereum/ethereal/ui/gui.go:197 +0xb6c
created by github.com/ethereum/go-ethereum/ethereal/ui.(*Gui).showWallet
    /Users/*******/go/src/github.com/ethereum/go-ethereum/ethereal/ui/gui.go:113 +0xf9