I was converting some .prc to .imp recently and came across a situation where eBook Publisher died without so much as a good-bye!
The culprit is reproduced here (in bold):
Note for display purposes, I put a space between '#' and '2' which should be removed!
<p>Html documents with this entity &# 20; bomb! No output produced by eBook Publisher v2.2.5</p>
I think the author of the .prc wanted to use spaces HTML code '&# 32;' and typed the hex code 20 instead.
BTW, HTML char codes are the &words; used to represent specific characters, for example:
'&' is represented by '&#amp;'
© is represented by '&#copy';
See the HTML Characters
wiki for more information or Special Characters
wiki for more advanced uses.