Sometimes the reverse side of a document is not scanned even though the Duplex option has been selected.

1. Check you are using a TWAIN driver and not a WIA driver.  WIA drivers do not support duplex scanning.
2. Check you are using the correct TWAIN driver to scan with. 
   1. As you are starting the scan choose the 'Settings' button and make sure the correct driver is selected.
   2. Is the Duplex option actually selected? (Scan both sides of the page).
3. Update the scanner driver.  Go to the scanner manufacturers website and download and install the latest version of the driver.
4. Use a third-party application such as Irfanview to scan some documents.  Often this appears to change some low-level settings to reset the correct size of the scanned image.
   Alternatively use the dwgdemo.exe file from the zipped suite of TWAIN test applications.  Download from here.
5. Exit from SPM or PHM and start up again.
6. If still no success submit a support ticket to the Incisive Helpdesk