These files are called : ProjectTimerData_install_backup_[version]_[date].bak and are located in the folder of your data file.
You can restore this file by using the restore function in Project Timer (setting>Backup) or you can also restore it manually:
- Make sure that Project Timer is shut down completely
- Locate the backup file This file is located at: c:\users\[account]\AppData\Roaming\ProjectTimer
(Note that AppData is a hidden folder)
- copy this file to ‘ProjectTimerData.xml’ in the same folder (overwrite the empty or corrupted file)
- Start Project Timer.