# specifically use wktopdf12. Tested with version:
    # wkhtmltopdf 0.12.1-c22928d (with patched qt)
    try:
        if useStylesheet:
            print '\tUsing custom stylesheet for PDF creation.'
            uss = 'file:///venvs/document_processing/python/wkhtmltopdf_cache/report.css'
            subp = Popen(['wkhtmltopdf12', '-q', '--disable-internal-links', '--no-outline',
                          '--user-style-sheet', uss, fullpath, tmppath])
        else:
            subp = Popen(['wkhtmltopdf12', '-q', '--disable-internal-links', '--no-outline', fullpath, tmppath])
        subp.wait()
        fileCreated = True
    except Exception as e:
        print >>sys.stderr, "wkhtmltopdf12 execution failed:", e
        msg = 'Failed to call wkhtmltopdf12. processing: %s' % fullpath
        print >>sys.stderr, ms