Problem when pasting back data
If the address does NOT post back in to your application, try ticking the "Click on field, within application, before posting back address" option, this will make the software click on the calling applications field (where you activated the Simply Postcode Lookup window) before pasting Postcode Address File address data back to your application.
This option should not be turned on, if your application uses a large text pad (such as Microsoft Word etc), since it will move the cursor before pasting the address data back to your application.