A new Beta 5 of Attribute Changer 9 is available and fixes a critical bug in the application.
In Advanced mode, if date and time synchronisation was selected, EXIF date and time was falsley changed.
If you encounter an issue doing testing, please contact me using the contact form.
Update 11 November 2017: Due to a bug in the EXIF modification code, the BETA 5 has been refreshed. If photo modifications don’t work, please re-download Attribute Changer Beta 5