<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Ross,<div class=""><br class=""></div><div class="">Your version of the file works fine.</div><div class=""><br class=""></div><div class="">So we know that this particular pdf file is malformed, but probably not by LaTeX. This is good</div><div class="">news on two different counts, Many thanks for the information, Ross.</div><div class=""><br class=""></div><div class="">It may be that all of the bugs in Sierra 10.14.4 are ultimately due to malformed pdf files. In that case we can</div><div class="">be sympathetic with Apple; they are trying to speed up scrolling in pdf for files which obey the specs. Worrying</div><div class="">about files with errors may be down lower in their list.</div><div class=""><br class=""></div><div class="">Dick</div><div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Apr 4, 2017, at 5:28 PM, Ross Moore <<a href="mailto:ross.moore@mq.edu.au" class="">ross.moore@mq.edu.au</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">

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<div class="" style="word-wrap:break-word">Hi All.
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<div class="">On 5 Apr 2017, at 08:14, Vic Norton <<a href="mailto:vic@norton.name" class="">vic@norton.name</a>> wrote:</div>
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<div class="">I’m running the 10.12.4 combo update.</div>
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I’m still on 10.10.5 and so none of these problems, but …</div>
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<div class="">I just opened Néstor’s link</div>
<div class="">  <a href="https://mitpress.mit.edu/sites/default/files/titles/content/9780262661829_sch_0001.pdf" class="">
https://mitpress.mit.edu/sites/default/files/titles/content/9780262661829_sch_0001.pdf</a></div>
<div class="">in Google Chrome. It looked perfect in Chrome. Then I downloaded it to my desktop. The icon on my desktop shows an image of a page with writing on it, but, when I open the document with Skim, it contains nothing but 18 blank pages.</div>
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<div class="">This document has a badly constructed Annotation that coves the whole of the 1st page.</div>
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<div class="">See image.</div>
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<div class="">So I can well understand that if this upsets any software, it’ll happen immediately</div>
<div class="">and yes 18 blank pages may well be shown.</div>
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<div class="">In Acrobat, with a Ctr-click on that 1st page, one gets the option to Edit or Delete</div>
<div class="">that Link Annotation.  So it seems to know that there is an error.</div>
<div class="">(Normally Ctrl-click brings up a menu which allows you to access the Metadata</div>
<div class="">and other file-related information.)</div>
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<div class="">After deleting it, Preflight reports no PDF syntax issues.</div>
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<div class="">The result is attached here.</div>
<div class="">Please report if this still shows the same kind of errors.</div>
<div class="">( ‘cos I cannot tell !! )</div>
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<div class="">This is pretty bad!!!! Fortunately, I am having no problems with LaTeX documents that I am working on.</div>
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<div class="">The metadata does not report this file as having been created by TeX software.</div>
<div class="">Maybe it has undergone some post-processing, resulting in Metadata</div>
<div class="">being lost or suppressed.</div>
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<div class="">My conclusion: not an issue regarding LaTeX production of PDFs.</div>
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<div class="">As for Apple?  </div>
<div class="">Well it’s a badly formed PDF, which nevertheless has valid content streams. </div>
<div class="">It becomes a matter of deciding how to handle badly-formed extra layers </div>
<div class="">— which it probably isn’t going to show anyway.</div>
<div class="">You want to just ignore the objects, but that is easier said than done, </div>
<div class="">the correct syntax hasn’t been followed.</div>
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<div class="">Regards,</div>
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<div class="">Vic</div>
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<div class="">P.S. What I see on Google Chrome. Absolutely nothing translates to Skim.</div>
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<div class="">Hope this helps,</div>
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<div class=""><span class="x_Apple-tab-span" style="white-space:pre"></span>Ross</div>
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<div class="" style="font-family:Arial,sans-serif; orphans:2; widows:2"><span class="x_Apple-style-span" style="font-size:9px"><b class=""><span class="" style="font-size:9pt"><br class="x_Apple-interchange-newline">
Dr Ross Moore</span></b></span></div>
<div class="" style="orphans:2; widows:2"><p class="" style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-variant-east-asian: normal; font-variant-position: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; margin-bottom: 3.75pt;">
<font class=""><b class="" style="color:rgb(119,119,119); font-family:Arial,sans-serif; font-size:9pt; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:normal; text-transform:none; white-space:normal; word-spacing:0px">Mathematics
 Dept </b><b class="" style="color:rgb(119,119,119); font-family:Arial,sans-serif; font-size:9pt; font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; line-height:normal; text-transform:none; white-space:normal; word-spacing:0px">|</b><font color="#777777" face="Arial, sans-serif" class=""><span class="" style="font-size:9pt"> 12
 Wally</span></font><font face="Arial, sans-serif" class="">’</font><font color="#777777" face="Arial, sans-serif" class=""><span class="" style="font-size:9pt">s Walk, 734</span></font><br class="">
<font color="#777777" face="Arial, sans-serif" class=""><span class="" style="font-size:9pt">Macquarie University, NSW 2109, Australia</span></font><font color="#777777" size="3" class=""><span class="" style="font-family:'Times New Roman',serif; font-size:12pt"></span></font></font></p><p class="" style="font-style:normal; font-variant:normal; font-weight:normal; letter-spacing:normal; orphans:2; text-align:start; text-indent:0px; text-transform:none; white-space:normal; widows:2; word-spacing:0px; font-family:Arial,sans-serif; color:rgb(119,119,119); font-size:7pt; line-height:11.25pt; margin-bottom:3.75pt">
<b class=""><span class="" style="font-size:9pt"><font class="">T:</font></span></b><span class="" style="font-size:9pt"><font class=""> +61 2 9850 <b class="">8955  |  F:</b> </font><a href="tel:%2B61%202%209850%209695" value="+61298509695" target="_blank" class=""><font class="">+61
 2 9850 8114</font></a><br class="">
<font class=""><b class="">M:</b><a href="tel:%2B61%20409%20125%20670" value="+61409125670" target="_blank" class="">+61 407 288 255</a><b class="">  |  </b>E: </font><a href="mailto:rick.minter@mq.edu.au" target="_blank" class=""><font class="">ross.moore@mq.edu.au</font><font color="#1155cc" class=""><span class="" style=""></span></font></a><font color="#1155cc" class=""><span class="" style=""></span></font><span class="" style=""></span><br class="">
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<span id="cid:28fa4a34-6b1f-4a3c-94fb-db28910f47cd@ausprd01.prod.outlook.com"><MIT-badAnnot.pdf></span><span id="cid:0111976d-3bc2-41ad-a7b4-7bf34d451cf6@ausprd01.prod.outlook.com"><9780262661829_sch_0001-linkgone.pdf></span>----------- Please Consult the Following Before Posting -----------<br class="">TeX FAQ: <a href="http://www.tex.ac.uk/faq" class="">http://www.tex.ac.uk/faq</a><br class="">List Reminders and Etiquette: <a href="https://www.esm.psu.edu/~gray/tex/" class="">https://www.esm.psu.edu/~gray/tex/</a><br class="">List Archives: <a href="http://dir.gmane.org/gmane.comp.tex.macosx" class="">http://dir.gmane.org/gmane.comp.tex.macosx</a><br class="">                <a href="https://email.esm.psu.edu/pipermail/macosx-tex/" class="">https://email.esm.psu.edu/pipermail/macosx-tex/</a><br class="">TeX on Mac OS X Website: <a href="http://mactex-wiki.tug.org/" class="">http://mactex-wiki.tug.org/</a><br class="">List Info: <a href="https://email.esm.psu.edu/mailman/listinfo/macosx-tex" class="">https://email.esm.psu.edu/mailman/listinfo/macosx-tex</a><br class=""></div></blockquote></div><br class=""></div></body></html>