ERROR: Python context internal state bug. this should not happen!

[marcatore]

What's related this kind of error?

I have many lines with that sentence without start rendering.

It seems that it doesn't give any other info.

[B.Y.O.B.]

Can you upload a testscene?
Does it happen everytime you do the same actions, or randomly?

[marcatore]

obviously now, after closed Blender and restarted I don't see that message.

Usually I don't start Blender from the command line and rarely I open the system console so I can't exactly reply to you.
I'll try to pay attention the next times and try to understand if there is a scheme.