Hello, since upgrading to version 1.5.6 (and then further to 1.5.7) the little buttons that used to have about five resolutions under the photo displayed are missing. I have toggled their representation from buttons to I think it was a dropdown list, but nothing reappeared. I am using the default theme included in zenphoto, called zenpage. Have tried switching to a couple of other ones that are included by default without luck. Any ideas on what could bring those buttons for controlling the viewed size back? Thanks!

That's because the plugin *viewer_size_image* was removed in version 1.5 (may 25, 2018)
See https://www.zenphoto.org/news/zenphoto-1.5/#--removed-plugins

Oh, thanks fretzl for taking time to bring that change to my attention. I quite liked that option and thought something was broken and repairable. Cheers!