shutil.copyfile is incomplete (truncated)

[Rob Schneider]

> I would consider the chance that the disk may be faulty, or the file 
> 
> system is corrupt. Does the problem go away if you write to a different 
> 
> file system or a different disk?
> 

It's a relatively new MacBook Pro with a solid state disk.  I've not noticed any other disk problems. I did a "repair permissions" (for what it's worth). Maybe I'll have it tested at the Genius Bar.  I don't have the full system on another computer to try that; but will work on that today.