Curve disappears in Object Mode and Render

Hi, I have a curve object which disappeared after I switched back from one scene to another. It is still visible in Edit Mode but not in Object mode and it is not rendered. I am puzzled…

you cannot render lines mesh or curve
too small one pixel wide!

happy bl

Yes, I can because of a shadeless wire material. At least as long as the effect from above does not happen.

Can you post a .blend file or a picture of your problem?

It may just be hidden.