{"id":5373,"date":"2011-07-07T18:34:06","date_gmt":"2011-07-07T13:02:17","guid":{"rendered":""},"modified":"2011-07-07T19:02:17","modified_gmt":"2011-07-07T13:02:17","slug":"awesome-epub-er","status":"publish","type":"post","link":"https:\/\/kk.org\/screenpublishing\/awesome-epub-er\/","title":{"rendered":"Awesome EPUB Error of the Day"},"content":{"rendered":"

\"epub-invalid.jpg\"<\/p>\n

ERROR: wtw-intl.epub\/OEBPS\/toc.ncx(110): ‘heading_id_17’: fragment identifier is not defined in ‘OEBPS\/Text\/wtw-intl.html’<\/em><\/p>\n

I got this error (actually, like 200 of them) from the EPUB validator<\/a> that ThreePress very generously<\/strong> hosts, and also from iTunes Producer when trying to upload a file for the iBookStore. <\/p>\n

I tried FlightCrew<\/a> too, another tool I’m super happy to have, but got a similarly unhelpful error message:
\nfile: wtw-intl.epub\/OEBPS\/toc.ncx
\nline: 110
\nmessage: This element’s “src” attribute value is “Text\/wtw-intl.html#heading_id_17”, but an element with an ID the fragment is referring to does not exist in that file.<\/em><\/p>\n

OK, that’s English, but after double-checking the files and values it mentioned, I still couldn’t identify the problem.<\/p>\n

After banging my head against the wall for 30 minutes, I decided to run Sigil<\/a>‘s check and discovered a few seemingly unrelated errors. So I closed a couple paragraph tags that were left open (ah, the perils of hand-coding), and corrected a couple of typos in a couple of internal anchored references. I then re-ran the file through EPUB Check and, presto change-o, errors gone. Nothing to do with the table of contents file (toc.ncx), and nothing to do with that particular id value. Yeah, that totally<\/em> makes sense \ud83d\ude42<\/p>\n

I’ve previously mentioned<\/a> the epubcheck wiki<\/a> and the mobileread epub forum<\/a> as helpful sources of info for error troubleshooting, but I wonder if there are others.<\/p>\n

Can anyone recommend any other great diagnostic tools or resources for EPUB errors?<\/p>\n","protected":false},"excerpt":{"rendered":"

ERROR: wtw-intl.epub\/OEBPS\/toc.ncx(110): ‘heading_id_17’: fragment identifier is not defined in ‘OEBPS\/Text\/wtw-intl.html’ I got this error (actually, like 200 of them) from the EPUB validator that ThreePress very generously hosts, and also from iTunes Producer when trying to upload a file for … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"0","sticky":false,"template":"","format":"standard","meta":[],"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/posts\/5373"}],"collection":[{"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/comments?post=5373"}],"version-history":[{"count":0,"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/posts\/5373\/revisions"}],"wp:attachment":[{"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/media?parent=5373"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/categories?post=5373"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kk.org\/screenpublishing\/wp-json\/wp\/v2\/tags?post=5373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}