Hi Valloric,
So I tried opening his test epub and then exiting Sigil and after a few attempts was able to see missing graphics at the start actually replaced with the "alt string once" and then text mess ups followed by good loads until it segfaulted.
The crashed thread happened in a similar the place:
Thread 4 Crashed:
0 com.valloric.Sigil.app 0x00000001001660d1 xercesc_3_1::BaseRefVectorOf<xercesc_3_1:
OMNode> ::addElement(xercesc_3_1:
OMNode*) + 17
1 com.valloric.Sigil.app 0x0000000100157679 xercesc_3_1:
OMAttrImpl::setValue(unsigned short const*) + 137
2 com.valloric.Sigil.app 0x000000010001223c PerformHTMLUpdates::UpdateReferenceInNode(xercesc_ 3_1:
OMElement*) + 2636
3 com.valloric.Sigil.app 0x00000001000131ee QtConcurrent::RunFunctionTask<void>::run() + 30
4 QtCore 0x0000000103045425 QThreadPool::start(QRunnable*, int) + 341
5 QtCore 0x00000001030494cf QThread::setPriority(QThread::Priority) + 495
6 libSystem.B.dylib 0x00007fff8024e456 _pthread_start + 331
7 libSystem.B.dylib 0x00007fff8024e309 thread_start + 13
and it ***MAY*** be related to the processing of this line - as it was always the first image that seemed to get messed up or was missing or replaced by alt once it opened.
<img src="images/chapter-01_fmt.jpeg" alt="chapter-01.tif" />
If you want me to try to generate more backtraces or post others to the issue just let me know.
Take care,
KevinH