Error: "Target does not exists in .... theme"

These dots are the name of each theme that I chose. An error is reported when I add a new album to the manager menu. The error is also visible in the manager menu on the page in the form of displaying a link instead of the title. Anyway, in every place where there should be a title is the name of the link. Does anyone have an idea where I can look for a mistake? Recently I made two changes on the site, i modified menu_manager.php and upgrade zenphoto to version 1.4.14 and it was all almost simultaneously so I did not notice which was ...
But when I change menu_manager.php to the original it does not change ...