The "save new" functionality is part of the game’s management system, which is crucial given the game's recent updates and modding support. Guide to "Save New" in XStoryPlayer 1. Managing Your Save Files

Close any other instances of XStoryPlayer or file-syncing services (like OneDrive or Google Drive) that might have locked the directory. Then try save new again, using a different folder.

A common point of inquiry for "new" players is the compatibility of version 3.5: Hardware Compatibility