I can't generate reflowable epub2/epub3 builds from the attached demo.docx file. (Fixed layout epubs work fine.)
I tested this with the March 8 2019 nightly build (Version: 126.96.36.199.0+ (x64). The bug also occurs with the same version and the latest x64 Linux kernels. (The bug was also present in earlier versions.)
Steps to Reproduce:
1. Open the attache demo.docx file.
2. Select File > Export as > Export as EPUB...
3. Accept all defaults (EPUB 3.0, Heading, Reflowable), click OK and select the default file name (demo.epub).
The output will fail with a General input output error.
Writer should generate a reflowable epub3 document.
User Profile Reset: No
FIXED layout EPUB 2.0/3.0 output works. I can also generate reflowable epub3 books from simple .docx files. Most likely there's a bug in the .docx parser and/or the reflowable epub converter.
Created attachment 149847 [details]
Demo.docx test file to reproduce this bug
Created attachment 149852 [details]
console logs + bt
On pc Debian x86-64 with master sources updated today, I got an assert.
Also reproduced in
Build ID: 3a801799536e6870f2fb111b1cc00b9575a35a39
CPU threads: 4; OS: Linux 4.15; UI render: default; VCL: gtk3;
Locale: ca-ES (ca_ES.UTF-8); Calc: group
@Miklos, I thought you might be interested in this issue