[Plugin: Photospace Gallery] Thumbnail cropping doesn't affect Photospace thumbnail display

I love this plugin and use it a lot for web design clients who are artists. I now have a client whose paintings are vertical images of people and the default WordPress cropping makes for an unattractive thumbnail (midsection rather than heads). When I use WordPress to edit the thumbnail image, Photospace doesn’t display the revised thumbnail even though WordPress displays it correctly in Media. How can I get Photospace to recognize this change and display the revised thumbnail?

http://wordpress.org/extend/plugins/photospace/