Try this : http://communities.mentor.com/docs/DOC-3518.
The SafetyNet.vbs script runs in the background and copies the Work\Layout_temp folder to a folder named "Layout_temp_" + datetime stamp of the LayoutDB.lyt file (IE. "Layout_temp_022020131032"), prior to the save. This copy is made whenever Autosave or File > Save is executed. It will maintain a number of copies specified by the Const MAXSAVES=2. You can change this to a number you prefer. Hence, the folder name reflects the time the LayoutDB.lyt file was last saved. The zip file contains both the scripts.ini file and the SafetyNet.vbs script. Put the SafetyNet.vbs file in any location, change the path entry in the scripts.ini file to reflect the location, then put the scripts.ini file in the WDIR folder or add its contents to a scripts.ini file currently being used.
Suggesting iCDBProject Backup.....
By default Expedition saves a backup every 60 minutes. What happened that caused the 4 hour loss of data?
Is there a way to restoring backup just for the layout, not the schematics. Example: PCB Designer want to restore the pcb but the engineer dont want to restoring his schematics. Thanks!
To restore Just the PCB follow this simple procedure...
1.Go to the root project directory and rename the\PCB folder to \pcb_old.
2. Go to the \ProjectBackup\backups directory and open the .zip file for the backup date you wish to restore.
3. In the Zip file, extract the \PCB directory to your Project Root directory or another location where you can copy it from, and then replace the \PCB directory in your project.
That should do it for you.