Streaming Failing

I signed up for demo account. Tried to use streaming example, but keeps getting error.

File “/usr/local/lib/python2.7/dist-packages/plotly/plotly/chunked_requests/”, line 61, in write
Exception: Server responded with status code: 404
and message: streamtoken not registered or valid.

I’ve added 2 stream tokens to my profile. I can provide details if necessary.

Any idea how I can get this to work?

Thank you.