This version was primarily used to track errors related to save-state corruption and plugin failures that occurred in earlier versions like v1.0.1 and v1.0.2. It allows testers to provide logs that help the developer identify why the game might fail to connect to the xGameDB.db file.
Running the .exe as an administrator is often required for debug builds to properly access the Captivity_Data folder. Purpose of the Debug Build Captivity_v1.0.5bDebug.zip
If you are attempting to run this specific build, note the following developer recommendations from the Captivity Itch.io forum : This version was primarily used to track errors