|
Has to be a bad or corrupted Sigil installation. Can you verify that C:\Program Files\Sigil\python3lib\hrefutils.py exists? What version of the test plugin are you using?
Also, support for Windows 7 has not been dropped by Sigil in the most recent versions. I test and use Sigil 1.2.0 in Windows 7 virtual machines all the time. The only thing the latest versions of Sigil (Qt5 actually) might have trouble with is aging videocards and/or drivers. Easy enough to test. You can always go back to 0.9.14 if there's problems.
|