No such file or directory in …/plugins/multi

Hello,

Is anyone else getting these errors when they click on the new sidebar in the edit sidebar screen?

Warning: include_once(/home/…/multiple-sidebar-generator/admin/includes/class-multiple-sidebar-generator-walker-page-checklist.php) [function.include-once]: failed to open stream: No such file or directory in /home/…/multiple-sidebar-generator/admin/admin.php on line 430

Warning: include_once() [function.include]: Failed opening ‘/home/…/multiple-sidebar-generator/admin/includes/class-multiple-sidebar-generator-walker-page-checklist.php’ for inclusion (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/…/multiple-sidebar-generator/admin/admin.php on line 430

Thanks!
James.

https://www.ads-software.com/plugins/multiple-sidebar-generator/