Why Google Tiles preview htm file doesn't open properly?

Hi,

After exporting Google Tiles, there is an option to preview the map. But for some reason, it stopped working for me and my work colleague. I'm wondering if this is something that we could change on the Chrome settings etc, or if it's not working for all Globa Mapper users.

Tiles export properly, and htm file seems to be created OK too. Just display doesn't work despite using different browsers. Additionally, after the refresh, the map seems to be displayed for a fraction of a second, but it promptly disappears, with just an error displayed.

Any clues on how to get it working again?