IJulia error

gistfile1.txt

2013-08-09 00:29:39.856 [NotebookApp] Using existing profile dir: u'/Users/simon/.ipython/profile_julia'
2013-08-09 00:29:39.883 [NotebookApp] Using MathJax from CDN: http://cdn.mathjax.org/mathjax/latest/MathJax.js
2013-08-09 00:29:39.898 [NotebookApp] Serving notebooks from local directory: /Users/simon
2013-08-09 00:29:39.899 [NotebookApp] The IPython Notebook is running at: http://127.0.0.1:8888/
2013-08-09 00:29:39.899 [NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
2013-08-09 00:29:51.461 [NotebookApp] Connecting to: tcp://127.0.0.1:62750
2013-08-09 00:29:51.462 [NotebookApp] Kernel started: 94e986c1-1aec-41f1-8251-bbada5073d53
2013-08-09 00:29:51.811 [NotebookApp] Connecting to: tcp://127.0.0.1:62747
2013-08-09 00:29:51.818 [NotebookApp] Connecting to: tcp://127.0.0.1:62749
2013-08-09 00:29:51.819 [NotebookApp] Connecting to: tcp://127.0.0.1:62748
SENDING IPython Msg [ idents status ] {
  header = ["msg_type"=>"status","msg_id"=>"5c226a4c-daf3-4235-909f-a1fdf3c080f7","username"=>"jlkernel","session"=>"63406e26-9522-40c6-91b9-d2252328c461"],
  metadata = Dict{String,Any}(),
  content = ["execution_state"=>"starting"]
}
Starting kernel event loops.
got msg part 332D406BB04046DEABAB6E9D88472C76
got msg part <IDS|MSG>
STDIO(stderr) = ERROR: Invalid HMAC signature
 in recv_ipython at /Users/simon/.julia/IJulia/src/msg.jl:78
 in eventloop at /Users/simon/.julia/IJulia/src/IJulia.jl:67
 in anonymous at multi.jl:1272