NSH did have some defective CDs in the Self Assessment series.  These were 
found after selling them during the S/C in Toronto.  Most if not all of 
them have been replaced with a new copy.  Additional problems have been 
found with some of the new CDs.  NSH is working with the vendor to 
identify the source of these problems and how it will be fixed.  If you 
have a problem with your CD, please contact the NSH office via email at 
"histo@nsh.org".  The NSH office with communicate with you about a fix 
when the problem is resolved.
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