I convert my exp files to pdf using pfd factory. Everything was fine
with Adode Reader 6.0. Now some of my students, who I believe have
7.0, are having difficulty reading the files. The problem is with the
math symbols like summation signs. I don't have a problem with 5.0 or
6.0. The students say that they get an error message about a font not
being available.

Is anyone aware of this problem? There was a similar problem with 5.0
which was corrected with a patch or update.

Steve Taylor