Sigil (ebook editor) won't start

[Asp]

I've been using Sigil, a free ebook editor, for some months on XP.

A few days ago it stopped working.

If I start the program, I see the process start, then a second later exit, never opening a window.

I uninstalled it and reinstalled. Same.

I deleted all its temp files and storage.

I tried Safe mode.

I tried the Portable version.

Turned off my antivirus and firewall.

Same.

I may have installed a Windows update (the last one, presumably) since the last time it worked.

You can try the portable version from here:

http://www.softpedia.com/get/PORTABLE-SOFTWARE/Authoring-Tools/X-Sigil.shtml

I guess one of its dependencies is not found or is the wrong version, but no idea how to work out what, I can't find any error messages.

Edited April 30, 2014 by Asp

[HarryTri]

No error messages in the event viewer?

[Asp]

No error messages in the event viewer?

Nada. No mention of Sigil at all, no errors at all at the times I tried to launch it.

-- tried installing earlier versions (from https://code.google.com/p/sigil/downloads/list?can=1&q=&colspec=Filename+Summary+Uploaded+ReleaseDate+Size+DownloadCount )

I installed 0.5.3 worked (Qt 4.8.4)

then uninstalled and installed 0.6.2. Worked. (Qt 4.8.4)

then uninstalled and installed 0.7.0. Worked. (Qt 5.1.0))

then uninstalled and installed 0.7.2. Worked.

then uninstalled and installed 0.7.4. Worked.

So, latest version 0.7.4 (using Qt5) is now working on my PC. No idea of how much of that procedure was necessary.

Edited May 1, 2014 by Asp