Hi Mike,
By default, user slide styles, custom transitions and templates are located in these 2 folders on your Mac:
/Users/UserName/Library/Application Support/PTEAVStudio/Templates
/Users/UserName/Library/Application Support/PTEAVStudio/Styles and Transitions
You can check PTE AV Studio > Main menu > Settings > Preferences. Templates tab for exact path to these folders.
I remember from your previous post on the forum:
Your program may have deleted the PTEAVStudio folder in Application Support. This likely deleted all the templates and styles as well. Sorry!
We offer a special uninstaller utility for PTE AV Studio on a Mac which allows to remove only configuration and keep slide styles and templates:
https://files.wnsoft.com/pteavstudio/RemovePTEAVStudio.app-11-0.zip
You can change a location of StylesAndTransition folder and Templates folder in PTE AV Studio and make backup of these folders.