Pasting copied sketch entities gets error

The procedure:

Open a file and edit a sketch.

Select some sketch entities.

Create a new file. Create a sketch on the new file.

Paste the sketch entities that you copied earlier.

I get the error Drag and Drop failed:

I have done this procedure thousands of times before. I have tried copying the whole sketch and many variations.

Anybody know what is wrong here?

SolidworksGeneral