ok thanks Phil. i've just purchased using a discount code. i had to uninstall and reinstall before i could entered the new reg. code. i installed the latest version (4.7.6.0). i note that the version linked to in the reg. email appears to be an older version (4.6.9.0? dated 16-mar-2015). Other than the removal of the nag screen on exit are there any other differences?
The free one we gave away some time ago is strictly for private use, and still shows some of the nag screens, while the full license doesn't have those limitations.