diff --git a/content/posts/2018-12.md b/content/posts/2018-12.md
index f47d18202..9bdf094d2 100644
--- a/content/posts/2018-12.md
+++ b/content/posts/2018-12.md
@@ -136,5 +136,67 @@ DEBUG: FC_WEIGHT didn't match
 ```
 
 - I inspected the troublesome PDF using [jhove](http://jhove.openpreservation.org/) and noticed that it is using `ISO PDF/A-1, Level B` and the other one doesn't list a profile, though I don't think this is relevant
+- I found another item that fails when generating a thumbnail ([10568/98391](https://hdl.handle.net/10568/98391), DSpace complains:
+
+```
+org.im4java.core.InfoException: org.im4java.core.CommandException: org.im4java.core.CommandException: identify: FailedToExecuteCommand `"gs" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" -dFirstPage=1 -dLastPage=1 "-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d" "-f/tmp/magick-14296Q0rJjfCeIj3w" "-f/tmp/magick-14296k_K6MWqwvpDm"' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+org.im4java.core.InfoException: org.im4java.core.CommandException: org.im4java.core.CommandException: identify: FailedToExecuteCommand `"gs" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" -dFirstPage=1 -dLastPage=1 "-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d" "-f/tmp/magick-14296Q0rJjfCeIj3w" "-f/tmp/magick-14296k_K6MWqwvpDm"' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+        at org.im4java.core.Info.getBaseInfo(Info.java:360)
+        at org.im4java.core.Info.<init>(Info.java:151)
+        at org.dspace.app.mediafilter.ImageMagickThumbnailFilter.getImageFile(ImageMagickThumbnailFilter.java:142)
+        at org.dspace.app.mediafilter.ImageMagickPdfThumbnailFilter.getDestinationStream(ImageMagickPdfThumbnailFilter.java:24)
+        at org.dspace.app.mediafilter.FormatFilter.processBitstream(FormatFilter.java:170)
+        at org.dspace.app.mediafilter.MediaFilterManager.filterBitstream(MediaFilterManager.java:475)
+        at org.dspace.app.mediafilter.MediaFilterManager.filterItem(MediaFilterManager.java:429)
+        at org.dspace.app.mediafilter.MediaFilterManager.applyFiltersItem(MediaFilterManager.java:401)
+        at org.dspace.app.mediafilter.MediaFilterManager.main(MediaFilterManager.java:237)
+        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
+        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+        at java.lang.reflect.Method.invoke(Method.java:498)
+        at org.dspace.app.launcher.ScriptLauncher.runOneCommand(ScriptLauncher.java:226)
+        at org.dspace.app.launcher.ScriptLauncher.main(ScriptLauncher.java:78)
+Caused by: org.im4java.core.CommandException: org.im4java.core.CommandException: identify: FailedToExecuteCommand `"gs" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" -dFirstPage=1 -dLastPage=1 "-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d" "-f/tmp/magick-14296Q0rJjfCeIj3w" "-f/tmp/magick-14296k_K6MWqwvpDm"' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+        at org.im4java.core.ImageCommand.run(ImageCommand.java:219)
+        at org.im4java.core.Info.getBaseInfo(Info.java:342)
+        ... 14 more
+Caused by: org.im4java.core.CommandException: identify: FailedToExecuteCommand `"gs" -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 "-sDEVICE=pngalpha" -dTextAlphaBits=4 -dGraphicsAlphaBits=4 "-r72x72" -dFirstPage=1 -dLastPage=1 "-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d" "-f/tmp/magick-14296Q0rJjfCeIj3w" "-f/tmp/magick-14296k_K6MWqwvpDm"' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+        at org.im4java.core.ImageCommand.finished(ImageCommand.java:253)
+        at org.im4java.process.ProcessStarter.run(ProcessStarter.java:314)
+        at org.im4java.core.ImageCommand.run(ImageCommand.java:215)
+        ... 15 more
+```
+
+- And on my Arch Linux environment ImageMagick's `convert` also segfaults:
+
+```
+$ convert bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf\[0\] -thumbnail x600 -flatten bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf.jpg
+zsh: abort (core dumped)  convert bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf\[0\]  x60
+```
+
+- But GraphicsMagick's `convert` works:
+
+```
+$ gm convert bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf\[0\] -thumbnail x600 -flatten bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf.jpg
+```
+
+- So far the only thing that stands out is that the two files that don't work were created with Microsoft Office 2016:
+
+```
+$ pdfinfo bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf | grep -E '^(Creator|Producer)'
+Creator:        Microsoft® Word 2016
+Producer:       Microsoft® Word 2016
+$ pdfinfo Food\ safety\ Kenya\ fruits.pdf | grep -E '^(Creator|Producer)'
+Creator:        Microsoft® Word 2016
+Producer:       Microsoft® Word 2016
+```
+
+- And the one that works was created with Office 365:
+
+```
+$ pdfinfo Info\ Note\ Mainstreaming\ gender\ and\ social\ differentiation\ into\ CCAFS\ research\ activities\ in\ West\ Africa-converted.pdf | grep -E '^(Creator|Producer)'
+Creator:        Microsoft® Word for Office 365
+Producer:       Microsoft® Word for Office 365
+```
 
 <!-- vim: set sw=2 ts=2: -->
diff --git a/docs/2018-12/index.html b/docs/2018-12/index.html
index ae6e47f88..bd7d88e18 100644
--- a/docs/2018-12/index.html
+++ b/docs/2018-12/index.html
@@ -21,7 +21,7 @@ I noticed that there is another issue with PDF thumbnails on CGSpace, and I see
 " />
 <meta property="og:type" content="article" />
 <meta property="og:url" content="https://alanorth.github.io/cgspace-notes/2018-12/" /><meta property="article:published_time" content="2018-12-02T02:09:30&#43;02:00"/>
-<meta property="article:modified_time" content="2018-12-02T17:55:32&#43;02:00"/>
+<meta property="article:modified_time" content="2018-12-03T12:35:27&#43;02:00"/>
 
 <meta name="twitter:card" content="summary"/>
 <meta name="twitter:title" content="December, 2018"/>
@@ -48,9 +48,9 @@ I noticed that there is another issue with PDF thumbnails on CGSpace, and I see
   "@type": "BlogPosting",
   "headline": "December, 2018",
   "url": "https://alanorth.github.io/cgspace-notes/2018-12/",
-  "wordCount": "875",
+  "wordCount": "1195",
   "datePublished": "2018-12-02T02:09:30&#43;02:00",
-  "dateModified": "2018-12-02T17:55:32&#43;02:00",
+  "dateModified": "2018-12-03T12:35:27&#43;02:00",
   "author": {
     "@type": "Person",
     "name": "Alan Orth"
@@ -263,8 +263,73 @@ DEBUG: FC_WEIGHT didn't match
 
 <ul>
 <li>I inspected the troublesome PDF using <a href="http://jhove.openpreservation.org/">jhove</a> and noticed that it is using <code>ISO PDF/A-1, Level B</code> and the other one doesn&rsquo;t list a profile, though I don&rsquo;t think this is relevant</li>
+<li>I found another item that fails when generating a thumbnail (<a href="https://hdl.handle.net/10568/98391"><sup>10568</sup>&frasl;<sub>98391</sub></a>, DSpace complains:</li>
 </ul>
 
+<pre><code>org.im4java.core.InfoException: org.im4java.core.CommandException: org.im4java.core.CommandException: identify: FailedToExecuteCommand `&quot;gs&quot; -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 &quot;-sDEVICE=pngalpha&quot; -dTextAlphaBits=4 -dGraphicsAlphaBits=4 &quot;-r72x72&quot; -dFirstPage=1 -dLastPage=1 &quot;-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d&quot; &quot;-f/tmp/magick-14296Q0rJjfCeIj3w&quot; &quot;-f/tmp/magick-14296k_K6MWqwvpDm&quot;' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+org.im4java.core.InfoException: org.im4java.core.CommandException: org.im4java.core.CommandException: identify: FailedToExecuteCommand `&quot;gs&quot; -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 &quot;-sDEVICE=pngalpha&quot; -dTextAlphaBits=4 -dGraphicsAlphaBits=4 &quot;-r72x72&quot; -dFirstPage=1 -dLastPage=1 &quot;-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d&quot; &quot;-f/tmp/magick-14296Q0rJjfCeIj3w&quot; &quot;-f/tmp/magick-14296k_K6MWqwvpDm&quot;' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+        at org.im4java.core.Info.getBaseInfo(Info.java:360)
+        at org.im4java.core.Info.&lt;init&gt;(Info.java:151)
+        at org.dspace.app.mediafilter.ImageMagickThumbnailFilter.getImageFile(ImageMagickThumbnailFilter.java:142)
+        at org.dspace.app.mediafilter.ImageMagickPdfThumbnailFilter.getDestinationStream(ImageMagickPdfThumbnailFilter.java:24)
+        at org.dspace.app.mediafilter.FormatFilter.processBitstream(FormatFilter.java:170)
+        at org.dspace.app.mediafilter.MediaFilterManager.filterBitstream(MediaFilterManager.java:475)
+        at org.dspace.app.mediafilter.MediaFilterManager.filterItem(MediaFilterManager.java:429)
+        at org.dspace.app.mediafilter.MediaFilterManager.applyFiltersItem(MediaFilterManager.java:401)
+        at org.dspace.app.mediafilter.MediaFilterManager.main(MediaFilterManager.java:237)
+        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
+        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
+        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
+        at java.lang.reflect.Method.invoke(Method.java:498)
+        at org.dspace.app.launcher.ScriptLauncher.runOneCommand(ScriptLauncher.java:226)
+        at org.dspace.app.launcher.ScriptLauncher.main(ScriptLauncher.java:78)
+Caused by: org.im4java.core.CommandException: org.im4java.core.CommandException: identify: FailedToExecuteCommand `&quot;gs&quot; -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 &quot;-sDEVICE=pngalpha&quot; -dTextAlphaBits=4 -dGraphicsAlphaBits=4 &quot;-r72x72&quot; -dFirstPage=1 -dLastPage=1 &quot;-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d&quot; &quot;-f/tmp/magick-14296Q0rJjfCeIj3w&quot; &quot;-f/tmp/magick-14296k_K6MWqwvpDm&quot;' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+        at org.im4java.core.ImageCommand.run(ImageCommand.java:219)
+        at org.im4java.core.Info.getBaseInfo(Info.java:342)
+        ... 14 more
+Caused by: org.im4java.core.CommandException: identify: FailedToExecuteCommand `&quot;gs&quot; -q -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 &quot;-sDEVICE=pngalpha&quot; -dTextAlphaBits=4 -dGraphicsAlphaBits=4 &quot;-r72x72&quot; -dFirstPage=1 -dLastPage=1 &quot;-sOutputFile=/tmp/magick-142966vQs5Di64ntH%d&quot; &quot;-f/tmp/magick-14296Q0rJjfCeIj3w&quot; &quot;-f/tmp/magick-14296k_K6MWqwvpDm&quot;' (-1) @ error/delegate.c/ExternalDelegateCommand/461.
+        at org.im4java.core.ImageCommand.finished(ImageCommand.java:253)
+        at org.im4java.process.ProcessStarter.run(ProcessStarter.java:314)
+        at org.im4java.core.ImageCommand.run(ImageCommand.java:215)
+        ... 15 more
+</code></pre>
+
+<ul>
+<li>And on my Arch Linux environment ImageMagick&rsquo;s <code>convert</code> also segfaults:</li>
+</ul>
+
+<pre><code>$ convert bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf\[0\] -thumbnail x600 -flatten bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf.jpg
+zsh: abort (core dumped)  convert bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf\[0\]  x60
+</code></pre>
+
+<ul>
+<li>But GraphicsMagick&rsquo;s <code>convert</code> works:</li>
+</ul>
+
+<pre><code>$ gm convert bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf\[0\] -thumbnail x600 -flatten bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf.jpg
+</code></pre>
+
+<ul>
+<li>So far the only thing that stands out is that the two files that don&rsquo;t work were created with Microsoft Office 2016:</li>
+</ul>
+
+<pre><code>$ pdfinfo bnfb_biofortification\ Module_Participants\ Guide\ 2018.pdf | grep -E '^(Creator|Producer)'
+Creator:        Microsoft® Word 2016
+Producer:       Microsoft® Word 2016
+$ pdfinfo Food\ safety\ Kenya\ fruits.pdf | grep -E '^(Creator|Producer)'
+Creator:        Microsoft® Word 2016
+Producer:       Microsoft® Word 2016
+</code></pre>
+
+<ul>
+<li>And the one that works was created with Office 365:</li>
+</ul>
+
+<pre><code>$ pdfinfo Info\ Note\ Mainstreaming\ gender\ and\ social\ differentiation\ into\ CCAFS\ research\ activities\ in\ West\ Africa-converted.pdf | grep -E '^(Creator|Producer)'
+Creator:        Microsoft® Word for Office 365
+Producer:       Microsoft® Word for Office 365
+</code></pre>
+
 <!-- vim: set sw=2 ts=2: -->
 
   
diff --git a/docs/robots.txt b/docs/robots.txt
index 3d2efaa86..e5d4b2f54 100644
--- a/docs/robots.txt
+++ b/docs/robots.txt
@@ -42,7 +42,7 @@ Disallow: /cgspace-notes/2015-12/
 Disallow: /cgspace-notes/2015-11/
 Disallow: /cgspace-notes/
 Disallow: /cgspace-notes/categories/
-Disallow: /cgspace-notes/tags/notes/
 Disallow: /cgspace-notes/categories/notes/
+Disallow: /cgspace-notes/tags/notes/
 Disallow: /cgspace-notes/posts/
 Disallow: /cgspace-notes/tags/
diff --git a/docs/sitemap.xml b/docs/sitemap.xml
index faeaf2812..5a9768f13 100644
--- a/docs/sitemap.xml
+++ b/docs/sitemap.xml
@@ -4,7 +4,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/2018-12/</loc>
-    <lastmod>2018-12-02T17:55:32+02:00</lastmod>
+    <lastmod>2018-12-03T12:35:27+02:00</lastmod>
   </url>
   
   <url>
@@ -199,7 +199,7 @@
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/</loc>
-    <lastmod>2018-12-02T17:55:32+02:00</lastmod>
+    <lastmod>2018-12-03T12:35:27+02:00</lastmod>
     <priority>0</priority>
   </url>
   
@@ -208,27 +208,27 @@
     <priority>0</priority>
   </url>
   
-  <url>
-    <loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
-    <lastmod>2018-12-02T17:55:32+02:00</lastmod>
-    <priority>0</priority>
-  </url>
-  
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/categories/notes/</loc>
     <lastmod>2018-03-09T22:10:33+02:00</lastmod>
     <priority>0</priority>
   </url>
   
+  <url>
+    <loc>https://alanorth.github.io/cgspace-notes/tags/notes/</loc>
+    <lastmod>2018-12-03T12:35:27+02:00</lastmod>
+    <priority>0</priority>
+  </url>
+  
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/posts/</loc>
-    <lastmod>2018-12-02T17:55:32+02:00</lastmod>
+    <lastmod>2018-12-03T12:35:27+02:00</lastmod>
     <priority>0</priority>
   </url>
   
   <url>
     <loc>https://alanorth.github.io/cgspace-notes/tags/</loc>
-    <lastmod>2018-12-02T17:55:32+02:00</lastmod>
+    <lastmod>2018-12-03T12:35:27+02:00</lastmod>
     <priority>0</priority>
   </url>