I am having problems using special commands of the form
in Personl TeX Inc's ptips DOS program (version 2.5) which
converts dvi to postscript.
Sometimes it works and other times I get the warning message
<<unable to open graphics file [figure.ps]>>. This does not
happen if the special command occurs in the first 2 or three
pages of the document, so it can find the file, but if I move
it to a later page I get the message.
I do not have these probles with the same files under Unix
using another dvi to ps program.
Has anyone had similar problems?