I'd like to hide right now ...

You're right. The button solved all problems. Must have pressed it by accident. Now that you mention it, I remember that I had the same problem a few month ago with the same conclusion ... very dangerous button!
One thing is bugging me since some versions: When you cancel the mesh export after hitting render, it still starts a render with the objects already exportet. Should this be like that?
And I got another, completely different request: On most of the projects it would make sense to connect the Environment&Time settings to the camera selected (if you got several camera positions with different sun settings). Since this is not possibly and maybe would be very complicated to implement, I save the sun positions as presets. But the main problem is, that these settings are saved locally. So when I use the file on another machine, I can only guess what the time settings were. Sometimes I use an oldschool pen, but notes tend to disappear from my table. Wouldn't it be possible to save the settings inside the file, like possible with the cameras? That would help a lot, also if you have to rerender some scenes after you haven't used it for a while.
cheers,
kami