App worked on my older Windows 10 laptop. I more recently did a full install of 3.3.6 win.64 on a fairly new desktop PC with Windows 11.
App opens normally as it did before. File > New creates a new, blank document.
I then go to Map > New.
The default map briefly appears for a second, but then Geocart crashes.
A similar thing happens when I open an existing .geo3 file. It opens normally, with assets on the documents visible. Map > New causes it to crash. In addition, changing the projection of an existing map on the document will change it for a second, but then crash the whole app.
Unsure if the issue is Windows 11 itself. (GeoCart, as of this writing, does not explicitly support it on the website.) Anything you want me to try?