This may be because whomever wrote the document used MathType, which of course makes use of MathType fonts. So you need to install them. Get 'em from: http://www.dessci.com/en/dl/fonts/ (I also have a local copy, not avaiable online)
Last updated on 2006-02-19 14:00:00 -0800, by Shalom CraimerBack to Tech Journal