(preview-latex.info)Installation Trouble

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B.3 Installation Trouble
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B.3.1 I just get `LaTeX found no preview images'.
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The reason for this is that LaTeX found no preview images in the
document in question.

   One reason might be that there are no previews to be seen.  If you
have not used preview-latex before, you might not know its manner of
operation.  One sure-fire way to test if you just have a document where
no previews are to be found is to use the provided example document
`circ.tex' (you will have to copy it to some directory where you have
write permissions).  If the symptom persists, you have a problem, and
the problem is most likely a LaTeX problem.  Here are possible reasons:

Filename database not updated
     Various TeX distributions have their own ways of knowing where the
     files are without actually searching directories.  The normal
     preview-latex installation should detect common tools for that
     purpose and use them.  If this goes wrong, or if the files get
     installed into a place where they are not looked for, the LaTeX
     run will fail.

An incomplete manual installation
     This should not happen if you followed installation instructions.
     Unfortunately, people know better all the time.  If only
     `preview.sty' gets installed without a set of supplementary files
     also in the `latex' subdirectory, preview-latex runs will not
     generate any errors, but they will not produce any previews,
     either.

An outdated `preview' installation
     The `preview.sty' package is useful for more than just
     preview-latex.  For example, it is part of TeXlive.  So you have
     to make sure that preview-latex does not get to work with outdated
     style and configuration files: some newer features will not work
     with older TeX style files, and really old files will make
     preview-latex fail completely.  There usual is a local `texmf'
     tree, or even a user-specific tree that are searched before the
     default tree.  Make sure that the first version of those files
     that gets found is the correct one.

B.3.2 I have problems with the XEmacs installation
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Please note that the XEmacs installation is different, since XEmacs has
a package system that gets used here.  Please make sure that you read
and follow the installation instructions for XEmacs.