[Plugin: GRAND FlAGallery – Best Photo & Media Gallery] updated plugin Site error

I was just working in a site https://www.sparkerphotography.ca and it said the plug in needed updating so I did that and now the site has an error:

Fatal error: Class ‘flagGallery’ not found in /home/sparkerp/public_html/wp-content/plugins/flash-album-gallery/admin/tuning.php on line 33

The customer had just spent a bunch of time creating galleries and adding albums, any idea how to fix this as I really have no idea what this means? It was working fine before I did the plug in update.

Thank you for any help you can provide.

https://www.ads-software.com/extend/plugins/flash-album-gallery/