The version I have in my library is Simple Graphical Window v 9/160121
The previous poster who fixed the issue deleted all their extensions, then used the Library in the Inform7 IDE to re-download all of them.
You may not need to go that far; try opening your extensions folder and remove Simple Graphical Window, close and re-open Inform to make sure it’s no longer there, then go into the Extensions>Library and tell it to download the extension. You should get the “official” updated version.
It’s possible if you downloaded it from the Inform 7 website or any other location, you got a modified version possibly based on an older build of I7. If the version number you have is higher than what’s in the library, I believe Inform will resist updating it.
Sometimes people will modify extensions for a specific purpose and make that available if it fills a need.
Just checked, library versions are:
INSTALLED Location Images by Emily Short (Version 1). Allows the author to set per-room images and show these as the player moves from room to room. Requires Simple Graphical Window by Emily Short.
(Click here to review or discuss Location Images at the IFF)
INSTALLED Simple Graphical Window by Emily Short (Version 9/160121). Provides a graphics window in the upper part of the screen, in which the author can place images; with provision for scaling, tiling, or centering images automatically, as well as setting a background color. Extension requires Glulx Entry Points Version 7.
(Click here to review or discuss Simple Graphical Window at the IFF)