Further testing (and a hint from another forum) revealed the root of the problem: the images didn't have an alpha channel. If I add an alpha channel (can't find a convenient one-click option for that, so I'm making do with adding a transparent layer and merging it to the main image), it works fine.
Still can't figure out why the portable version does not require this extra step. Must be something in the settings, which probably have different defaults in the portable... I'll have to dig further. -- MCBastos (via www.gimpusers.com/forums) _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list