It was recently brought to my attention that the Excel System Back-Tester(ESB) did not function properly on the MAC OS X.  In other words it bombed when trying to open a comma delimited data file and also when one tried to run an algorithm.  Thanks to a purchaser of the UATSTB I was able to fix the bugs without removing any functionality.  I will post the Macintosh version here as well as have WILEY put it on the book’s website.  Sorry for any inconvenience this may have caused.  Here is the the link:

ESB Macintosh