Missing "psyr" font

I’m using SWP 5.50 Build 2960.

 

After I click on the Typeset DVI Preview, I get the following TrueTeX Message ‘Warning: font “psyr” not in font dictionary’.  As a result, certain math symbols don’t show up in the preview.  How do I fix this?

 

Thanks,

Marcio

There must be a typesetting

There must be a typesetting specfication or package that is calling in the fonts.  Most likely, that package would need to be removed from the document.