Comment 5 for bug 391334

Purely for the purpose of checking this hypothesis, making the default editor NOTEPAD.EXE in lib\desktop_env.py solves the problem in hand. But this is NOT a recommended fix, since Notepad may not be an acceptable default editor for all other purposes. Opening the log with a Viewer rather than an Editor may be a safer option. I can't see how to configure in qviewer for this purpose.