There are a few of these (exact same: error 32, broken pipe) to be found
in a google search of 'mac os x error 32 broken pipe' with a few answers.
https://www.google.com/search?q=Mac+OS+X+error+32+broken+pipe
One of the suggestions, is to be sure the same version of Disk Utility was
used to create, save, and restore the disk image. However if you are up-
grading, there is a possibility that would not be the case, as it may not be
present if the computer were formatted & otherwise had D.U. used in HDD.
A few ideas in one place from 2007 appears to outline the possible cures;
surprisingly the cnet link does not have the same clutter as recent ones...
•Disk Image will not Mount: 'broken pipe' errors & more - macfixit-cnet reviews:
http://reviews.cnet.com/8301-13727_7-10328723-263.html
So, there are a few things to do about this error, to include a cause.
{Odd, the only direct Support Article reference I could find to Apple
Support page on this topic no longer exists & was unsearchable.}
Hopefully this helps somewhat.
Good luck & happy computing! 🙂
edited