ERROR Message from pages that were valid

Dear W3C,

I had finished building the main building blocks of my site conforming to
the high standards of W3C and went to check a couple of new pages with new
content and they worked fine and passed.

Then I just wanted to test a couple of pages I changed the wording in the
database and added a little bit of code and now none of the pages will
validate.

Print screen attached

Links I tested: that needed testing:
http://www.lincolnshirenetworks.org.uk/1public/events/index.php and
http://www.lincolnshirenetworks.org.uk/1public/corp_resp/index.php?GBNID=48 

Links I tested that were prefect: http://www.lincolnshirenetworks.org.uk/
and http://www.lincolnshirenetworks.org.uk/1index.php and
http://www.lincolnshirenetworks.org.uk/1public/register/index.php - in fact
every other page was prefect. 

 

Error message:

1.              Sorry, I am unable to validate this document because on line
132 it contained one or more bytes that I cannot interpret as utf-8 (in
other words, the bytes found are not valid values in the specified Character
Encoding). Please check both the content of the file and the character
encoding indication. 

The error was: utf8 "\xA3" does not map to Unicode

 

NOTE: Whenever possible, give the address of the document you were checking.


 

Kind Regards,
Joseph