XnView Software

I tried it again giving it more time (>5min), but still no result.
Image has the dimensions 416x360x24 so it is not very large.
It is just a copy of the empty notepad.

When I save it I can see for a fraction of a second a progress bar running to, let's say, 100%.

Maybe I made something wrong, I tried to save it as Guetzli jpg instead of normal jpg. Do I need some extra plugin for this format?
Regular jpg works.

Anyway, saving as Guetzli jpg is not working. Folder keeps empty.

No errror, just don't

Hi, I made a picture of the active (e.g. editor) window with ALT+PRINT and insert as new picture. This picture cannot be saved as JPG in the chosen folder. Folder keeps empty. But the Filename in XnView MP changes from "clipboard 1.jpg" to the desired name.
File can be saved as PNG and ends up in ...