<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=""><span id="x_cid:495840F4-A454-4240-8405-49B92793EC56" class=""><Google ChromeScreenSnapz001.jpeg></span></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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Dr Ross Moore</span></b></span></div>
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