This morning I noticed that the Pegasus window was gone. I restarted the program, and rebooted the computer but nothing changed.
What happens is this: When I double-click on the Pegasus shortcut, the start-up window appears, but when it closes, the main window is not visible. Clicking on the icon at the bottom of the screen does not make it visible. However, the program must be working somewhere in the background, because i can hear "new mail messages" when I send test mail. Also, I can right-click on the icon in the notification area and get a "new message window"; however, I cannot do anything with it, except closing it (no clicks accepted; no keyboard events processed).
I guess something happened in the OS (Windows 10) that got Pegasus to store a faulty window state, but I do not where or what. Anyone have a clue?
I still think I am using some kind of hybrid of Pegasus; I installed 4.80 some months ago, but immediately had a nasty crash pasting something when composing a message. I then downgraded back to 4.73, but still had some problems with pasting in new messages, so I assume a part of 4.80 did survive the downgrade. For my problem in January, I assumed this information was not relevant (a correct assumption, it turned out), but this time I am not so sure.