I finally got around to upgrading Apachce::Gallery to version 0.9.1. The upgrade is relatively easy: just edit your templates to change variable expansions from $FOO to {$FOO}. If you are using a copyright image, you now have the option of using a text string in the config (rendered using a TrueType font of your choice). It’s worth glancing through the manual (use perldoc Apache::Gallery to see the manual).
If you are having a problem with new pictures not showing up, check the version of imlib2 you have installed. I had to downgrade to 1.1.2nb3 to be able to generate cached images again. There is possibly some glitch between p5-Image-Imlib2 and the new imlib2 1.2.0 code. I’ve filed PR pkg/29054 as a reminder.