FWIW:
For Windows users seeing a crash or bug in Sigil, here are two links about enabling crash reporting on Windows for general applications:
http://www.thewindowsclub.com/activa...ting-windows-8
https://msdn.microsoft.com/en-us/lib...(v=vs.85).aspx
Those crash dumps could be quite valuable in determining exactly what is conflicting with what.
If you can recreate one of these hangs, please think about enabling the storage of local user crashdumps and looking for new crashdumps after your issue with Sigil happens and posting that information here or in at issue at our github site.
Thanks,
KevinH